{"id":1031,"date":"2026-09-15T13:19:23","date_gmt":"2026-09-15T13:19:23","guid":{"rendered":"https:\/\/czechpeptide.com\/?page_id=1031"},"modified":"2026-09-16T18:51:34","modified_gmt":"2026-09-16T18:51:34","slug":"melanotan2","status":"publish","type":"page","link":"https:\/\/czechpeptide.com\/cz\/melanotan2\/","title":{"rendered":"Melanotan2"},"content":{"rendered":"\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700;800&#038;display=swap\" rel=\"stylesheet\">\n<script src=\"https:\/\/cdn.tailwindcss.com\"><\/script>\n\n<script>\n    tailwind.config = {\n        theme: {\n            extend: {\n                fontFamily: {\n                    sans: ['Inter', 'sans-serif'],\n                },\n                colors: {\n                    brand: {\n                        DEFAULT: '#b142f5',\n                        hover: '#9a2ad9',\n                        light: '#f7ebff',\n                        border: '#d794f9'\n                    }\n                }\n            }\n        }\n    }\n<\/script>\n\n<style>\n    .product-page-wrapper { background-color: #fcfcfd; color: #1f2937; }\n    .product-image-bg { background: radial-gradient(circle at center, #f7ebff 0%, #f3f4f6 70%); }\n    input[type=\"number\"]::-webkit-inner-spin-button,\n    input[type=\"number\"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }\n    input[type=\"number\"] { -moz-appearance: textfield; }\n    .tab-content { display: none; animation: fadeIn 0.2s ease-in-out; }\n    .tab-content.active { display: block; }\n    @keyframes fadeIn { from { opacity: 0; transform: translateY(3px); } to { opacity: 1; transform: translateY(0); } }\n    @keyframes scroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }\n    .logo-slider { display: flex; width: max-content; animation: scroll 35s linear infinite; }\n    .logo-slider:hover { animation-play-state: paused; }\n<\/style>\n\n<div class=\"product-page-wrapper antialiased min-h-screen pb-12\">\n    <main class=\"max-w-6xl mx-auto px-2 sm:px-6 py-4 sm:py-8\">\n        \n        <div class=\"flex flex-row gap-2 sm:gap-6 lg:gap-8 items-start\">\n            \n            <!-- LEFT COLUMN -->\n            <div class=\"w-[45%] lg:w-1\/2 flex flex-col gap-2 sm:gap-4\">\n                \n                <!-- Product Image -->\n                <div class=\"product-image-bg rounded-xl sm:rounded-2xl flex items-center justify-center h-[180px] sm:h-[400px] lg:h-[500px] border border-purple-200 shadow-sm relative overflow-hidden p-2\">\n                    <img decoding=\"async\" src=\"https:\/\/czechpeptide.com\/wp-content\/uploads\/2026\/04\/Mt2_10mg_batch_004_a5c51c4d9d.jpeg\" alt=\"Melanotan II Vial\" class=\"max-w-[95%] max-h-[95%] object-contain mix-blend-multiply drop-shadow-xl hover:scale-105 transition-transform duration-500 cursor-zoom-in\" onclick=\"openImageModal(this.src)\">\n                <\/div>\n                \n                <!-- Info Cards (PC Only) -->\n                <div class=\"hidden sm:grid grid-cols-1 sm:grid-cols-2 gap-2 sm:gap-3\">\n                    <div class=\"bg-white border border-purple-200 rounded-lg sm:rounded-xl p-2 sm:p-3 flex items-start gap-1.5 sm:gap-3 shadow-sm\">\n                        <div class=\"bg-brand-light text-brand p-1 sm:p-1.5 rounded-md hidden sm:block\">\n                            <svg class=\"w-5 h-5\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M19.428 15.428a2 2 0 00-1.022-.547l-2.387-.477a6 6 0 00-3.86.517l-.318.158a6 6 0 01-3.86.517L6.05 15.21a2 2 0 00-1.806.547M8 4h8l-1 1v5.172a2 2 0 00.586 1.414l5 5c1.26 1.26.367 3.414-1.415 3.414H4.828c-1.782 0-2.674-2.154-1.414-3.414l5-5A2 2 0 009 10.172V5L8 4z\"><\/path><\/svg>\n                        <\/div>\n                        <div>\n                            <p class=\"font-bold text-[9px] sm:text-xs text-gray-900 leading-tight\">Peptide appearance<\/p>\n                            <p class=\"text-[8px] sm:text-[11px] text-gray-500 mt-0.5\">Lyophilized form<\/p>\n                        <\/div>\n                    <\/div>\n                    <div class=\"bg-white border border-purple-200 rounded-lg sm:rounded-xl p-2 sm:p-3 flex items-start gap-1.5 sm:gap-3 shadow-sm\">\n                        <div class=\"bg-brand-light text-brand p-1 sm:p-1.5 rounded-md hidden sm:block\">\n                            <svg class=\"w-5 h-5\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M19.428 15.428a2 2 0 00-1.022-.547l-2.387-.477a6 6 0 00-3.86.517l-.318.158a6 6 0 01-3.86.517L6.05 15.21a2 2 0 00-1.806.547M8 4h8l-1 1v5.172a2 2 0 00.586 1.414l5 5c1.26 1.26.367 3.414-1.415 3.414H4.828c-1.782 0-2.674-2.154-1.414-3.414l5-5A2 2 0 009 10.172V5L8 4z\"><\/path><\/svg>\n                        <\/div>\n                        <div>\n                            <p class=\"font-bold text-[9px] sm:text-xs text-gray-900 leading-tight\">Solution not bundled<\/p>\n                            <a href=\"#\" class=\"text-[8px] sm:text-[11px] text-brand font-medium mt-0.5 hover:underline block\">Bacteriostatic water<\/a>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Frequently Bought Together (Mobile Only) -->\n                <div class=\"border border-purple-200 rounded-lg p-2 bg-brand-light\/30 shadow-inner mt-1 block sm:hidden\">\n                    <span class=\"text-[9px] font-bold text-brand uppercase block mb-1.5 text-center\">Frequently Bought Together<\/span>\n                    <div class=\"flex flex-col gap-2 bg-white p-2 rounded-md border border-purple-100 shadow-sm transition-all hover:border-brand-light\">\n                        <div class=\"flex items-center gap-1.5\">\n                            <div class=\"h-8 w-8 bg-brand-light rounded-md flex items-center justify-center flex-shrink-0 border border-purple-100 p-0.5\">\n                                <img decoding=\"async\" src=\"https:\/\/czechpeptide.com\/wp-content\/uploads\/2026\/08\/bacteriostatic-scaled.png\" alt=\"Bacteriostatic Water\" class=\"max-h-full object-contain mix-blend-multiply\">\n                            <\/div>\n                            <div class=\"flex-1\">\n                                <p class=\"font-bold text-[9px] text-gray-900 leading-tight\">Bacteriostatic Water (3ml)<\/p>\n                                <p class=\"text-brand font-bold text-[9px] mt-0.5\">+ 99 K\u010d<\/p>\n                            <\/div>\n                        <\/div>\n                        <div class=\"flex items-center justify-end gap-1.5 w-full border-t border-purple-50 pt-1.5\">\n                            <span class=\"text-[10px] font-bold text-gray-700 uppercase tracking-wide\">Add<\/span>\n                            <label class=\"relative inline-flex items-center cursor-pointer\">\n                                <input type=\"checkbox\" class=\"sr-only peer bac-checkbox\" onchange=\"toggleSuggestedProduct(event)\">\n                                <div class=\"w-7 h-4 bg-gray-200 peer-focus:outline-none rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:border-gray-300 after:border after:rounded-full after:h-3 after:w-3 after:transition-all peer-checked:bg-brand shadow-inner\"><\/div>\n                            <\/label>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Accordion -->\n                <div class=\"bg-white border border-purple-200 rounded-lg sm:rounded-xl shadow-sm overflow-hidden mt-1 sm:mt-0\">\n                    \n                    <!-- Primary Benefits Accordion -->\n                    <div class=\"border-b border-purple-100\">\n                        <button onclick=\"toggleAccordion('acc-1')\" class=\"w-full px-2 sm:px-4 py-2 sm:py-3 text-left flex justify-between items-center focus:outline-none hover:bg-brand-light\/50 transition-colors\">\n                            <span class=\"font-bold text-[10px] sm:text-sm text-gray-900 pr-1\">Primary Benefits<\/span>\n                            <svg id=\"icon-acc-1\" class=\"w-3 h-3 sm:w-4 sm:h-4 text-brand transition-transform duration-200 flex-shrink-0\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M12 4v16m8-8H4\"><\/path><\/svg>\n                        <\/button>\n                        <div id=\"content-acc-1\" class=\"hidden px-2 sm:px-4 pb-2 sm:pb-4 text-[9px] sm:text-xs text-gray-600 leading-relaxed\">\n                            <ul class=\"list-disc pl-3 sm:pl-4 space-y-1.5\">\n                                <li><strong>Supports Tanning:<\/strong> Melanotan 2 may help increase the skin\u2019s natural production of melanin, which gives the skin a darker appearance.<\/li>\n<li><strong>Enhanced Skin Color:<\/strong> May help develop a deeper, more noticeable tan over time.<\/li>\n<li><strong>Melanin Support:<\/strong> Works by affecting the body\u2019s natural melanin-producing process.<\/li>\n<li><strong>Longer-Lasting Tan:<\/strong> May help maintain a darker skin tone for longer when used as directed.<\/li>\n\n                            <\/ul>\n                        <\/div>\n                    <\/div>\n                    \n                    <!-- Dosing Instructions Accordion -->\n                    <div class=\"border-b border-purple-100\">\n                        <button onclick=\"toggleAccordion('acc-2')\" class=\"w-full px-2 sm:px-4 py-2 sm:py-3 text-left flex justify-between items-center focus:outline-none hover:bg-brand-light\/50 transition-colors\">\n                            <span class=\"font-bold text-[10px] sm:text-sm text-gray-900 pr-1\">Usage and Dosing<\/span>\n                            <svg id=\"icon-acc-2\" class=\"w-3 h-3 sm:w-4 sm:h-4 text-brand transition-transform duration-200 flex-shrink-0\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M12 4v16m8-8H4\"><\/path><\/svg>\n                        <\/button>\n                        <div id=\"content-acc-2\" class=\"hidden px-2 sm:px-4 pb-3 sm:pb-4 text-[9px] sm:text-xs text-gray-600 leading-relaxed space-y-3\">\n                            <div>\n                                <h4 class=\"text-[10px] sm:text-sm font-bold text-gray-900 mb-1\">Dosing &#038; Reconstitution Guide<\/h4>\n                                <p class=\"text-[9px] sm:text-xs\">Educational guide for reconstitution and daily dosing<\/p>\n                                <p class=\"text-[9px] sm:text-xs\"><strong>Standard \/ Gradual Titration<\/strong> (3 mL = 3.33 mg\/mL)<\/p>\n                            <\/div>\n                            \n                            <!-- Phase Table -->\n                            <div class=\"overflow-x-auto border border-purple-100 rounded-lg\">\n                                <table class=\"w-full min-w-[280px] text-left bg-white\">\n                                    <thead class=\"bg-brand-light text-brand\">\n                                        <tr>\n                                            <th class=\"p-1.5 sm:p-2 border-b border-purple-100 font-bold text-[8px] sm:text-[10px] uppercase\">Week \/ Phase<\/th>\n                                            <th class=\"p-1.5 sm:p-2 border-b border-purple-100 font-bold text-[8px] sm:text-[10px] uppercase\">Daily Dose<\/th>\n                                            <th class=\"p-1.5 sm:p-2 border-b border-purple-100 font-bold text-[8px] sm:text-[10px] uppercase text-right\">Units (per injection) (mL)<\/th>\n                                        <\/tr>\n                                    <\/thead>\n                                    <tbody class=\"text-[9px] sm:text-xs\">\n                                        <tr>\n                                            <td class=\"p-1.5 sm:p-2 border-b border-purple-50 font-medium text-gray-900\">Week 1<\/td>\n                                            <td class=\"p-1.5 sm:p-2 border-b border-purple-50 text-gray-700\">250 mcg (0.25 mg)<\/td>\n                                            <td class=\"p-1.5 sm:p-2 border-b border-purple-50 text-brand font-medium text-right\">7.5 units (0.075 mL)<\/td>\n                                        <\/tr>\n                                        <tr class=\"bg-gray-50\/50\">\n                                            <td class=\"p-1.5 sm:p-2 border-b border-purple-50 font-medium text-gray-900\">Week 2<\/td>\n                                            <td class=\"p-1.5 sm:p-2 border-b border-purple-50 text-gray-700\">500 mcg (0.5 mg)<\/td>\n                                            <td class=\"p-1.5 sm:p-2 border-b border-purple-50 text-brand font-medium text-right\">15 units (0.15 mL)<\/td>\n                                        <\/tr>\n                                        <tr>\n                                            <td class=\"p-1.5 sm:p-2 border-b border-purple-50 font-medium text-gray-900\">Week 3<\/td>\n                                            <td class=\"p-1.5 sm:p-2 border-b border-purple-50 text-gray-700\">750 mcg (0.75 mg)<\/td>\n                                            <td class=\"p-1.5 sm:p-2 border-b border-purple-50 text-brand font-medium text-right\">22.5 units (0.225 mL)<\/td>\n                                        <\/tr>\n                                        <tr class=\"bg-gray-50\/50\">\n                                            <td class=\"p-1.5 sm:p-2 border-b border-purple-50 font-medium text-gray-900\">Weeks 4\u20138<\/td>\n                                            <td class=\"p-1.5 sm:p-2 border-b border-purple-50 text-gray-700\">1000 mcg (1 mg)<\/td>\n                                            <td class=\"p-1.5 sm:p-2 border-b border-purple-50 text-brand font-medium text-right\">30 units (0.30 mL)<\/td>\n                                        <\/tr>\n                                        <tr>\n                                            <td class=\"p-1.5 sm:p-2 font-medium text-gray-900\">Maintenance<br>(after Week 8)<\/td>\n                                            <td class=\"p-1.5 sm:p-2 text-gray-700\">500\u20131000 mcg<br>(1\u20132\u00d7 weekly)<\/td>\n                                            <td class=\"p-1.5 sm:p-2 text-brand font-medium text-right\">15\u201330 units<br>(0.15\u20130.30 mL)<\/td>\n                                        <\/tr>\n                                    <\/tbody>\n                                <\/table>\n                            <\/div>\n                            <p class=\"text-[9px] sm:text-xs text-gray-500 mt-1\">\n                                Frequency: Inject once daily subcutaneously during the initial 8-week tanning phase; transition to 1\u20132 injections per week for maintenance dosing to sustain pigmentation[3]. This schedule uses the standard 3.0 mL dilution for consistent unit measurements. For \u226410-unit (\u22640.10 mL) administrations, consider 30- or 50-unit insulin syringes for improved readability.\n                            <\/p>\n                        <\/div>\n                    <\/div>\n                    \n                    <!-- Side Effects Accordion -->\n                    <div>\n                        <button onclick=\"toggleAccordion('acc-3')\" class=\"w-full px-2 sm:px-4 py-2 sm:py-3 text-left flex justify-between items-center focus:outline-none hover:bg-brand-light\/50 transition-colors\">\n                            <span class=\"font-bold text-[10px] sm:text-sm text-gray-900 pr-1\">Side Effects<\/span>\n                            <svg id=\"icon-acc-3\" class=\"w-3 h-3 sm:w-4 sm:h-4 text-brand transition-transform duration-200 flex-shrink-0\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M12 4v16m8-8H4\"><\/path><\/svg>\n                        <\/button>\n                        <div id=\"content-acc-3\" class=\"hidden px-2 sm:px-4 pb-2 sm:pb-4 text-[9px] sm:text-xs text-gray-600 leading-relaxed\">\n                            <ul class=\"list-disc pl-3 sm:pl-4 space-y-1\">\n                                <li>Nausea or mild stomach discomfort.<\/li>\n<li>Temporary facial flushing or warmth.<\/li>\n<li>Darkening of existing moles, freckles, or other pigmented areas.<\/li>\n<li>Temporary changes in appetite or fatigue.<\/li>                            <\/ul>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Calculator Button -->\n                <a href=\"https:\/\/czechpeptide.com\/calculator\" target=\"_blank\" class=\"w-full mt-1 sm:mt-2 flex justify-center items-center gap-1.5 text-brand hover:text-white font-bold py-2 sm:py-3 px-4 bg-brand-light hover:bg-brand rounded-lg sm:rounded-xl transition-all border border-brand text-[10px] sm:text-sm shadow-sm group\">\n                    <svg class=\"w-4 h-4 sm:w-5 sm:h-5 group-hover:scale-110 transition-transform\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M9 7h6m0 10v-3m-3 3h.01M9 17h.01M9 14h.01M12 14h.01M15 11h.01M12 11h.01M9 11h.01M7 21h10a2 2 0 002-2V5a2 2 0 00-2-2H7a2 2 0 00-2 2v14a2 2 0 002 2z\"><\/path><\/svg>\n                    Calculate your dose\n                <\/a>\n\n            <\/div>\n\n            <!-- RIGHT COLUMN -->\n            <div class=\"w-[55%] lg:w-1\/2 flex flex-col gap-2 sm:gap-5\">\n                \n                <div>\n                    <span class=\"text-[9px] sm:text-[11px] font-bold tracking-wider text-brand uppercase\">Peptide Blend<\/span>\n                    <h1 class=\"text-lg sm:text-3xl lg:text-4xl font-extrabold text-gray-900 sm:mt-1 tracking-tight leading-none sm:leading-tight\">Melanotan II 10mg<\/h1>\n                    \n                    <div class=\"flex items-center gap-1 sm:gap-1.5 mt-1 sm:mt-2.5\">\n                        <span id=\"stock-dot\" class=\"w-1.5 h-1.5 sm:w-2 sm:h-2 rounded-full bg-green-500\"><\/span>\n                        <span class=\"text-[10px] sm:text-xs font-bold text-green-600\" id=\"stock-status\">In stock<\/span>\n                    <\/div>\n                <\/div>\n\n                <p class=\"text-gray-600 leading-snug sm:leading-relaxed text-[9px] sm:text-sm hidden sm:block\">\n                    Melanotan II is a cyclic alpha-MSH analogue used in melanocortin-receptor research. Published studies look at receptor binding, pigment-cell signals, food-intake measurements, and behaviour models. \n                    <a href=\"#overview-tab\" onclick=\"document.getElementById('tab-overview').click()\" class=\"text-brand font-semibold hover:underline\">More &rarr;<\/a>\n                <\/p>\n\n                <hr class=\"border-purple-100 sm:border-purple-200 my-1 sm:my-0\">\n\n                <!-- Mass & Quantity -->\n                <div class=\"flex flex-col gap-3 sm:gap-4 w-full\">\n                    <div class=\"flex flex-col sm:flex-row sm:items-center gap-1.5 sm:gap-3 w-full\">\n                        <span class=\"text-[10px] sm:text-[11px] font-bold text-gray-500 sm:w-16\">MASS<\/span>\n                        <div class=\"flex gap-1.5 sm:gap-2 flex-wrap\">\n                            <button id=\"mass-10mg\" onclick=\"selectMass(10)\" class=\"bg-brand text-white px-3 sm:px-3 py-1.5 sm:py-1.5 rounded-full text-[10px] sm:text-xs font-bold shadow-sm transition-transform active:scale-95\">10mg<\/button>\n                        <\/div>\n                    <\/div>\n\n                    <div class=\"flex flex-col sm:flex-row sm:items-center gap-1.5 sm:gap-3 w-full\">\n                        <span class=\"text-[10px] sm:text-[11px] font-bold text-gray-500 sm:w-16\">QUANTITY<\/span>\n                        <div class=\"flex items-center border border-purple-200 rounded-full bg-white shadow-sm overflow-hidden h-8 sm:h-8 w-max max-w-full\">\n                            <button onclick=\"handleQtyChange(-1)\" class=\"px-3 sm:px-3 text-brand hover:bg-brand-light\/50 h-full transition-colors text-sm sm:text-base font-bold\">&minus;<\/button>\n                            <input type=\"number\" id=\"qty-input\" value=\"1\" min=\"1\" onchange=\"handleQtyInput()\" class=\"w-8 sm:w-10 text-center font-bold text-[11px] sm:text-sm text-gray-900 bg-transparent border-none focus:outline-none focus:ring-0 p-0\">\n                            <button onclick=\"handleQtyChange(1)\" class=\"px-3 sm:px-3 text-brand hover:bg-brand-light\/50 h-full transition-colors text-sm sm:text-base font-bold\">&plus;<\/button>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Bundle & Save -->\n                <div class=\"flex flex-col gap-1 sm:gap-2 sm:mt-1\">\n                    <span class=\"text-[9px] sm:text-[11px] font-bold text-gray-900 uppercase\">Bundle &#038; Save<\/span>\n                    <div class=\"grid grid-cols-3 gap-1 sm:gap-2\">\n                        \n                        <div id=\"bundle-1\" onclick=\"selectBundle(1)\" class=\"bundle-card border-2 border-brand rounded-md sm:rounded-xl p-1 sm:p-2.5 cursor-pointer relative transition-all hover:shadow-md bg-brand-light\">\n                            <div class=\"flex flex-col items-center text-center gap-1 sm:gap-1.5\">\n                                <img decoding=\"async\" src=\"https:\/\/placehold.co\/30x60\/transparent\/b142f5?text=1\" alt=\"1 Vial\" class=\"h-5 sm:h-8 object-contain\">\n                                <div>\n                                    <p class=\"font-extrabold text-[8px] sm:text-xs text-brand leading-tight\">1 VIAL<\/p>\n                                    <p class=\"text-[7px] sm:text-[9px] text-gray-500 font-medium leading-none mt-0.5\">Normal<\/p>\n                                <\/div>\n                            <\/div>\n                        <\/div>\n\n                        <div id=\"bundle-2\" onclick=\"selectBundle(2)\" class=\"bundle-card border border-purple-200 rounded-md sm:rounded-xl p-1 sm:p-2.5 cursor-pointer relative transition-all hover:border-brand hover:shadow-md bg-white\">\n                            <div class=\"absolute -top-2 sm:-top-2.5 left-1\/2 -translate-x-1\/2 bg-green-500 text-white text-[6px] sm:text-[9px] font-bold px-1 sm:px-2 py-0.5 rounded-full uppercase whitespace-nowrap shadow-sm\">\n                                Save 10%\n                            <\/div>\n                            <div class=\"flex flex-col items-center text-center gap-1 sm:gap-1.5 mt-1 sm:mt-0\">\n                                <img decoding=\"async\" src=\"https:\/\/placehold.co\/40x60\/transparent\/b142f5?text=2\" alt=\"2 Vials\" class=\"h-5 sm:h-8 object-contain\">\n                                <div>\n                                    <p class=\"font-extrabold text-[8px] sm:text-xs text-gray-900 leading-tight\">2 VIALS<\/p>\n                                    <p class=\"text-[7px] sm:text-[9px] text-green-600 font-bold leading-none mt-0.5\">10% off<\/p>\n                                <\/div>\n                            <\/div>\n                        <\/div>\n\n                        <div id=\"bundle-3\" onclick=\"selectBundle(3)\" class=\"bundle-card border border-purple-200 rounded-md sm:rounded-xl p-1 sm:p-2.5 cursor-pointer relative transition-all hover:border-brand hover:shadow-md bg-white\">\n                            <div class=\"absolute -top-2 sm:-top-2.5 left-1\/2 -translate-x-1\/2 bg-brand text-white text-[6px] sm:text-[9px] font-bold px-1 sm:px-2 py-0.5 rounded-full uppercase whitespace-nowrap shadow-sm\">\n                                Best Value\n                            <\/div>\n                            <div class=\"flex flex-col items-center text-center gap-1 sm:gap-1.5 mt-1 sm:mt-0\">\n                                <img decoding=\"async\" src=\"https:\/\/placehold.co\/50x60\/transparent\/b142f5?text=3%2B\" alt=\"3+ Vials\" class=\"h-5 sm:h-8 object-contain\">\n                                <div>\n                                    <p class=\"font-extrabold text-[8px] sm:text-xs text-gray-900 leading-tight\">3+ VIALS<\/p>\n                                    <p class=\"text-[7px] sm:text-[9px] text-brand font-bold leading-none mt-0.5\">15% off<\/p>\n                                <\/div>\n                            <\/div>\n                        <\/div>\n\n                    <\/div>\n                <\/div>\n\n                <!-- Add to Cart -->\n                <div class=\"flex gap-2 sm:gap-3 mt-1 sm:mt-1\">\n                    <button onclick=\"document.getElementById('tab-tests').click(); document.getElementById('overview-tab').scrollIntoView({behavior:'smooth'});\" class=\"border border-purple-200 text-brand hover:bg-brand-light font-bold px-4 py-2 sm:py-2.5 rounded-full transition-colors shadow-sm hidden sm:block text-xs sm:text-sm\">\n                        Tests\n                    <\/button>\n                    <button id=\"add-to-cart-btn\" onclick=\"addToCart()\" class=\"flex-1 bg-brand hover:bg-brand-hover text-white font-bold py-2.5 sm:py-2.5 rounded-full shadow-lg transition-transform active:scale-[0.98] flex items-center justify-center gap-1 sm:gap-1.5 text-[11px] sm:text-base disabled:opacity-50 disabled:cursor-not-allowed\">\n                        <span id=\"btn-text\">Add to cart &#8211; <span id=\"btn-total-price\">2 032<\/span> K\u010d<\/span>\n                    <\/button>\n                <\/div>\n\n                <!-- Badges -->\n                <div class=\"flex flex-col sm:grid sm:grid-cols-3 gap-1 sm:gap-3 border border-purple-200 rounded-lg sm:rounded-xl p-2 sm:p-3 bg-white shadow-sm text-[8px] sm:text-[10px] lg:text-xs font-semibold text-gray-700\">\n                    <div class=\"flex items-center gap-1 sm:gap-1.5 justify-start\">\n                        <img decoding=\"async\" src=\"https:\/\/czechpeptide.com\/wp-content\/uploads\/2026\/09\/Zasilkovna_Claim.png\" alt=\"Z\u00e1silkovna\" class=\"h-3 sm:h-4 object-contain flex-shrink-0\">\n                        <span>Z-Box \/ Adress<\/span>\n                    <\/div>\n                    <div class=\"flex items-center gap-1 sm:gap-1.5\">\n                        <svg class=\"w-3 h-3 sm:w-4 sm:h-4 text-gray-500 flex-shrink-0\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M16 11V7a4 4 0 00-8 0v4M5 9h14l1 12H4L5 9z\"><\/path><\/svg>\n                        <span>Discreet packaging<\/span>\n                    <\/div>\n                    <div class=\"flex items-center gap-1 sm:gap-1.5\">\n                        <svg class=\"w-3 h-3 sm:w-4 sm:h-4 text-brand flex-shrink-0\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M8 7h12m0 0l-4-4m4 4l-4 4m0 6H4m0 0l4 4m-4-4l4-4\"><\/path><\/svg>\n                        <span>Free shipping > 3000CZK<\/span>\n                    <\/div>\n                <\/div>\n\n                <!-- Frequently Bought Together (PC Only) -->\n                <div class=\"border border-purple-200 rounded-lg sm:rounded-xl p-2 sm:p-3 bg-brand-light\/30 shadow-inner mt-0.5 sm:mt-1 hidden sm:block\">\n                    <span class=\"text-[9px] sm:text-[10px] font-bold text-brand uppercase block mb-1.5 sm:mb-2\">Frequently Bought Together<\/span>\n                    <div class=\"flex items-center gap-2 sm:gap-3 bg-white p-1.5 sm:p-2.5 rounded-md sm:rounded-lg border border-purple-100 shadow-sm transition-all hover:border-brand-light hover:shadow-md\">\n                        <div class=\"h-8 w-8 sm:h-12 sm:w-12 bg-brand-light rounded-md flex items-center justify-center flex-shrink-0 border border-purple-100 overflow-hidden p-0.5 sm:p-1\">\n                            <img decoding=\"async\" src=\"https:\/\/czechpeptide.com\/wp-content\/uploads\/2026\/08\/bacteriostatic-scaled.png\" alt=\"Bacteriostatic Water\" class=\"max-h-full object-contain mix-blend-multiply\">\n                        <\/div>\n                        <div class=\"flex-1\">\n                            <p class=\"font-bold text-[9px] sm:text-xs text-gray-900 leading-tight\">Bacteriostatic Water (3ml)<\/p>\n                            <p class=\"text-[8px] sm:text-[10px] text-gray-500 mt-0.5 hidden sm:block\">Essential for reconstitution<\/p>\n                            <p class=\"text-brand font-bold text-[9px] sm:text-xs mt-0.5\">+ 99 K\u010d<\/p>\n                        <\/div>\n                        <div class=\"flex-shrink-0 flex items-center gap-2 pl-1\">\n                            <span class=\"text-[11px] font-bold text-gray-700 uppercase tracking-wide\">Add<\/span>\n                            <label class=\"relative inline-flex items-center cursor-pointer\">\n                                <input type=\"checkbox\" class=\"sr-only peer bac-checkbox\" onchange=\"toggleSuggestedProduct(event)\">\n                                <div class=\"w-9 h-5 bg-gray-200 peer-focus:outline-none rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:border-gray-300 after:border after:rounded-full after:h-4 after:w-4 after:transition-all peer-checked:bg-brand shadow-inner\"><\/div>\n                            <\/label>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Payment Methods -->\n                <div class=\"flex items-center justify-between px-1 transition-all duration-300\">\n                    <span class=\"text-[7px] sm:text-[9px] uppercase font-bold text-gray-400\">We accept<\/span>\n                    <div class=\"flex gap-2 sm:gap-3 items-center\">\n                        <span class=\"font-bold text-green-600 text-[9px] sm:text-xs flex items-center gap-0.5 sm:gap-1\">\n                            <svg class=\"w-2.5 h-2.5 sm:w-3.5 sm:h-3.5\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M17 9V7a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2m2 4h10a2 2 0 002-2v-6a2 2 0 00-2-2H9a2 2 0 00-2 2v6a2 2 0 002 2zm7-5a2 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fill=\"currentColor\"><path d=\"M318.7 268.7c-.2-36.7 16.4-64.4 50-84.8-18.8-26.9-47.2-41.7-84.7-44.6-35.5-2.8-74.3 20.7-88.5 20.7-15 0-49.4-19.7-76.4-19.7C63.3 141.2 4 184.8 4 273.5q0 39.3 14.4 81.2c12.8 36.7 59 126.7 107.2 125.2 25.2-.6 43-17.9 75.8-17.9 31.8 0 48.3 17.9 76.4 17.3 48.6-.7 90.4-82.5 102.6-119.3-65.2-30.7-61.7-90-61.7-91.3zM344 38.6c-27.1 27.6-67.4 29.8-67.4 29.8-1.5-27.4 12.5-61.5 31.8-82 25.4-26.5 64-28.7 64-28.7-2.1 27-14 62-28.4 80.9z\"\/><\/svg> Pay<\/span>\n                    <\/div>\n                <\/div>\n\n            <\/div>\n        <\/div>\n\n        <!-- EXPANDABLE TABS SECTION -->\n        <div class=\"mt-8 sm:mt-12 border border-purple-200 rounded-2xl bg-white shadow-sm overflow-hidden\" id=\"overview-tab\">\n            <div class=\"flex border-b border-purple-100 overflow-x-auto hide-scrollbar\">\n                <button id=\"tab-tests\" onclick=\"switchTab('tests')\" class=\"tab-btn flex-1 min-w-[100px] py-3 px-4 text-xs sm:text-sm font-bold text-center border-b-2 border-brand text-brand transition-colors\">Tests<\/button>\n                <button id=\"tab-overview\" onclick=\"switchTab('overview')\" class=\"tab-btn flex-1 min-w-[100px] py-3 px-4 text-xs sm:text-sm font-bold text-center border-b-2 border-transparent text-gray-500 hover:text-brand transition-colors\">Overview<\/button>\n                <button id=\"tab-specs\" onclick=\"switchTab('specs')\" class=\"tab-btn flex-1 min-w-[100px] py-3 px-4 text-xs sm:text-sm font-bold text-center border-b-2 border-transparent text-gray-500 hover:text-brand transition-colors\">Specifications<\/button>\n                <button id=\"tab-handling\" onclick=\"switchTab('handling')\" class=\"tab-btn flex-1 min-w-[100px] py-3 px-4 text-xs sm:text-sm font-bold text-center border-b-2 border-transparent text-gray-500 hover:text-brand transition-colors\">Handling<\/button>\n                <button id=\"tab-references\" onclick=\"switchTab('references')\" class=\"tab-btn flex-1 min-w-[100px] py-3 px-4 text-xs sm:text-sm font-bold text-center border-b-2 border-transparent text-gray-500 hover:text-brand transition-colors\">References<\/button>\n            <\/div>\n\n            <div class=\"p-4 sm:p-8\">\n                \n                <!-- Tab Content: Tests -->\n                <div id=\"content-tests\" class=\"tab-content active\">\n                    <div class=\"flex flex-col sm:flex-row sm:items-end justify-between gap-4 mb-6\">\n                        <div>\n                            <span class=\"text-[10px] font-bold tracking-wider text-brand uppercase\">Analytical Documentation<\/span>\n                            <h3 class=\"text-xl sm:text-3xl font-extrabold text-gray-900 mt-1\">Latest test results<\/h3>\n                        <\/div>\n                        <div class=\"flex gap-2\">\n                            <button id=\"test-mass-10mg\" onclick=\"selectMass(10)\" class=\"bg-brand-light text-brand border border-brand px-3 sm:px-4 py-1.5 rounded-lg sm:rounded-xl text-[10px] sm:text-xs font-bold transition-colors\">10mg Vial<\/button>\n                        <\/div>\n                    <\/div>\n\n                    <div class=\"grid grid-cols-1 md:grid-cols-2 gap-4\">\n                        <!-- Third-Party Analytical Testing -->\n                        <div class=\"bg-white border border-purple-200 rounded-2xl p-5 sm:p-6 shadow-sm flex flex-col justify-between\">\n                            <div>\n                                <div class=\"flex items-center justify-between mb-3\">\n                                    <span class=\"bg-green-100 text-green-700 text-[10px] font-bold px-3 py-1 rounded-full uppercase tracking-wider flex items-center gap-1\">\n                                        <span class=\"w-1.5 h-1.5 rounded-full bg-green-500\"><\/span> Verified Batch\n                                    <\/span>\n                                    <span class=\"text-gray-400 text-xs font-medium\">HPLC \/ FTIR<\/span>\n                                <\/div>\n                                <h4 class=\"text-base sm:text-lg font-extrabold text-gray-900 mb-1\">Third-Party Lab Results<\/h4>\n                                <p class=\"text-xs text-gray-600 mb-4 leading-relaxed\">\n                                    Every batch is independently tested by accredited analytical laboratories to certify identity, sequence, and purity standards (>98%).\n                                <\/p>\n                            <\/div>\n                            \n                            <div class=\"flex flex-col sm:flex-row gap-2 pt-2 border-t border-purple-50\">\n                                <a href=\"https:\/\/czechpeptide.com\/wp-content\/uploads\/2026\/09\/Bacteriostatci-Water-scaled.png\" target=\"_blank\" class=\"flex-1 inline-flex items-center justify-center gap-2 bg-brand hover:bg-brand-hover text-white text-xs font-bold py-2.5 px-4 rounded-xl transition-all shadow-sm\">\n                                    <svg class=\"w-4 h-4\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M7 21h10a2 2 0 002-2V9.414a1 1 0 00-.293-.707l-5.414-5.414A1 1 0 0012.586 3H7a2 2 0 00-2 2v14a2 2 0 002 2z\"><\/path><\/svg>\n                                    Lab Report (PDF)\n                                <\/a>\n                                <button class=\"flex-1 inline-flex items-center justify-center gap-2 bg-brand-light hover:bg-brand text-brand hover:text-white border border-brand text-xs font-bold py-2.5 px-4 rounded-xl transition-all\">\n                                    <svg class=\"w-4 h-4\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M4 16l4.586-4.586a2 2 0 012.828 0L16 16m-2-2l1.586-1.586a2 2 0 012.828 0L20 14m-6-6h.01M6 20h12a2 2 0 002-2V6a2 2 0 00-2-2H6a2 2 0 00-2 2v12a2 2 0 002 2z\"><\/path><\/svg>\n                                    View Certificate\n                                <\/button>\n                            <\/div>\n                        <\/div>\n\n                        <!-- Safety Data Sheet (SDS) -->\n                        <div class=\"bg-white border border-purple-200 rounded-2xl p-5 sm:p-6 shadow-sm flex flex-col justify-between\">\n                            <div>\n                                <div class=\"flex items-center justify-between mb-3\">\n                                    <span class=\"bg-purple-100 text-brand text-[10px] font-bold px-3 py-1 rounded-full uppercase tracking-wider\">\n                                        Safety Compliance\n                                    <\/span>\n                                    <span class=\"text-gray-400 text-xs font-medium\">GHS \/ REACH<\/span>\n                                <\/div>\n                                <h4 class=\"text-base sm:text-lg font-extrabold text-gray-900 mb-1\">Safety Data Sheet (SDS)<\/h4>\n                                <p class=\"text-xs text-gray-600 mb-4 leading-relaxed\">\n                                    Complete hazard analysis, physical-chemical properties, handling guidelines, and laboratory toxicological profile.\n                                <\/p>\n                            <\/div>\n                            \n                            <div class=\"pt-2 border-t border-purple-50\">\n                                <a href=\"https:\/\/czechpeptide.com\/wp-content\/uploads\/2026\/09\/Melanotan_2_AJ-1-2.pdf\" target=\"_blank\" class=\"w-full inline-flex items-center justify-center gap-2 bg-brand-light hover:bg-brand text-brand hover:text-white border border-brand text-xs font-bold py-2.5 px-4 rounded-xl transition-all shadow-sm\">\n                                    <svg class=\"w-4 h-4\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z\"><\/path><\/svg>\n                                    Open Safety Data Sheet (SDS)\n                                <\/a>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Tab Content: Overview -->\n                <div id=\"content-overview\" class=\"tab-content text-gray-700 leading-relaxed text-[11px] sm:text-sm space-y-3\">\n                    <h4 class=\"font-bold text-gray-900 text-sm\">Research overview: Melanotan II<\/h4>\n                    <p>Melanotan II is a cyclic synthetic peptide, not linear alpha-MSH. Its ring-shaped structure matters in receptor and structure-activity comparisons.<\/p>\n                    <p>Studies cover melanocortin receptors, pigment cells, food-intake endpoints, and behaviour tests. Each finding applies only to the experimental system used.<\/p>\n                    <h4 class=\"font-bold text-gray-900 text-sm mt-4\">Melanocortin-receptor studies<\/h4>\n                    <p>Studies compare binding and signalling across melanocortin-receptor types. This work helps researchers examine how a cyclic peptide&#8217;s structure affects receptor activity. Pigment-related experiments are receptor-system observations, not a product outcome.<\/p>\n                    <h4 class=\"font-bold text-gray-900 text-sm mt-4\">Behavioural and metabolic endpoints<\/h4>\n                    <p>Other studies measure food intake, alcohol intake, and metabolic endpoints. The original model, protocol, and controls are needed to understand these results.<\/p>\n                <\/div>\n                \n                <!-- Tab Content: Specifications -->\n                <div id=\"content-specs\" class=\"tab-content text-gray-700 leading-relaxed\">\n                    <h3 class=\"text-base sm:text-lg font-extrabold text-brand mb-4 border-b border-purple-100 pb-2\">Specifications<\/h3>\n                    <div class=\"space-y-4\">\n                        <div>\n                            <h4 class=\"font-bold text-gray-900 uppercase text-[10px] sm:text-xs tracking-wider mb-1\">Molecular profile Sequence<\/h4>\n                            <p class=\"bg-brand-light p-2.5 sm:p-3 rounded-lg font-mono text-[10px] sm:text-xs break-all border border-purple-100\">\n                                Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2\n                            <\/p>\n                        <\/div>\n                        \n                        <div class=\"grid grid-cols-1 md:grid-cols-3 gap-4\">\n                            <div>\n                                <h4 class=\"font-bold text-gray-900 uppercase text-[10px] sm:text-xs tracking-wider mb-1\">Molecular mass<\/h4>\n                                <ul class=\"list-disc list-inside text-[11px] sm:text-xs pl-1\">\n                                    <li>1024.18 g\/mol<\/li>\n                                <\/ul>\n                            <\/div>\n                            <div>\n                                <h4 class=\"font-bold text-gray-900 uppercase text-[10px] sm:text-xs tracking-wider mb-1\">CAS number<\/h4>\n                                <ul class=\"list-disc list-inside text-[11px] sm:text-xs pl-1\">\n                                    <li>121062-08-6<\/li>\n                                <\/ul>\n                            <\/div>\n                            <div>\n                                <h4 class=\"font-bold text-gray-900 uppercase text-[10px] sm:text-xs tracking-wider mb-1\">Molecular formula<\/h4>\n                                <ul class=\"list-disc list-inside text-[11px] sm:text-xs pl-1 break-all\">\n                                    <li>C50H69N15O9<\/li>\n                                <\/ul>\n                            <\/div>\n                        <\/div>\n\n                        <div class=\"pt-3 border-t border-purple-100\">\n                            <h4 class=\"font-extrabold text-gray-900 text-sm mb-3\">Material record<\/h4>\n                            <div class=\"grid grid-cols-1 sm:grid-cols-2 gap-3\">\n                                <div class=\"bg-brand-light border border-purple-100 p-3 rounded-lg\">\n                                    <h5 class=\"font-bold text-brand text-xs mb-0.5\">Physical appearance<\/h5>\n                                    <p class=\"text-[11px] sm:text-xs\">White to off-white lyophilized powder<\/p>\n                                <\/div>\n                                <div class=\"bg-brand-light border border-purple-100 p-3 rounded-lg\">\n                                    <h5 class=\"font-bold text-brand text-xs mb-0.5\">Solubility<\/h5>\n                                    <p class=\"text-[11px] sm:text-xs\">Soluble in bacteriostatic water and suitable aqueous laboratory solvents.<\/p>\n                                <\/div>\n                            <\/div>\n                        <\/div>\n\n                        <div class=\"bg-brand-light\/50 border-l-4 border-brand p-3 mt-3\">\n                            <p class=\"text-[11px] sm:text-xs font-medium text-gray-700\"><strong>Product note:<\/strong> Synthetic cyclic melanocortin analogue; supplied strictly for research use only.<\/p>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Tab Content: Handling -->\n                <div id=\"content-handling\" class=\"tab-content\">\n                    <div class=\"space-y-6 text-xs sm:text-sm text-gray-700\">\n                        <div>\n                            <h3 class=\"font-extrabold text-brand mb-2 text-sm sm:text-base\">Peptides in transport<\/h3>\n                            <p class=\"leading-relaxed\">Peptides in lyophilized form are supplied in glass vials by standard shipping methods and do not require refrigeration. Short-term temperature fluctuations during transport will not reduce their quality and efficacy. Even at high summer temperatures, the peptides in lyophilized form are stable for several weeks.<\/p>\n                        <\/div>\n                        <div>\n                            <h3 class=\"font-extrabold text-brand mb-2 text-sm sm:text-base\">Storage of lyophilized peptides<\/h3>\n                            <p class=\"leading-relaxed mb-2\">Lyophilized peptides should be stored in a dry place, protected from light and moisture. The following storage conditions are generally recommended:<\/p>\n                            <ul class=\"list-disc list-inside space-y-1 ml-2\">\n                                <li><strong>Room temperature (15\u201325 \u00b0C):<\/strong> Up to 3 months<\/li>\n                                <li><strong>Refrigerated (2\u20138 \u00b0C):<\/strong> Up to 6 months<\/li>\n                                <li><strong>Frozen (-20 \u00b0C or below):<\/strong> 3\u20135 years (recommended for long-term storage)<\/li>\n                            <\/ul>\n                            <p class=\"mt-2 text-gray-500 italic text-[11px] sm:text-xs\">Allow the vial to reach room temperature after taking it out of the refrigerator or freezer.<\/p>\n                        <\/div>\n                        <div>\n                            <h3 class=\"font-extrabold text-brand mb-2 text-sm sm:text-base\">Storage of reconstituted peptides<\/h3>\n                            <p class=\"leading-relaxed mb-2\">Once reconstituted, peptide solutions are generally less stable than their lyophilized form and should be stored under refrigerated conditions whenever possible. The following storage conditions are generally recommended:<\/p>\n                            <ul class=\"list-disc list-inside space-y-1 ml-2\">\n                                <li><strong>Room temperature (15\u201325 \u00b0C):<\/strong> Avoid prolonged storage<\/li>\n                                <li><strong>Refrigerated (2\u20138 \u00b0C):<\/strong> Typically 4\u20138 weeks<\/li>\n                                <li><strong>Frozen (-20 \u00b0C or below):<\/strong> Up to 3\u20134 months<\/li>\n                            <\/ul>\n                            <p class=\"mt-2 text-gray-500 italic text-[11px] sm:text-xs\">To preserve peptide integrity, avoid repeated freeze\u2013thaw cycles, as these may accelerate peptide degradation.<\/p>\n                        <\/div>\n                        <div class=\"bg-brand-light\/50 border-l-4 border-brand p-4 rounded-r-lg mt-4\">\n                            <h4 class=\"font-bold text-gray-900 mb-1\">Important:<\/h4>\n                            <p class=\"text-[11px] sm:text-xs leading-relaxed text-gray-700\">Most manufacturers recommend discarding reconstituted peptides within 4 weeks when stored at 2\u20138 \u00b0C. This recommendation is intentionally conservative and may not reflect the actual chemical stability of every peptide. In our own stability studies, many peptides reconstituted in bacteriostatic water showed no detectable degradation after 12 weeks of refrigerated storage. As peptide stability is highly sequence- and formulation-dependent, this result should not be extrapolated to all peptides without supporting stability data.<\/p>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Tab Content: References -->\n                <div id=\"content-references\" class=\"tab-content text-gray-700 text-xs sm:text-sm\"><p class=\"text-center py-6 italic text-gray-400\">Scientific references and citations will be displayed here.<\/p><\/div>\n            <\/div>\n        <\/div>\n        \n        <!-- LOGO SLIDESHOW SECTION -->\n        <div class=\"mt-8 sm:mt-12 py-6 sm:py-8 bg-white border border-purple-200 rounded-2xl shadow-sm overflow-hidden relative\">\n            <p class=\"text-center text-gray-900 font-bold mb-4 sm:mb-6 text-xs sm:text-base\">Each new formulation begins with data from reliable scientific sources:<\/p>\n            \n            <div class=\"w-full overflow-hidden\">\n                <div class=\"logo-slider gap-4 sm:gap-10 items-center px-4\">\n                    <!-- SET 1 -->\n                    <div class=\"bg-white border border-purple-100 p-2 sm:p-3 rounded-lg shadow-sm min-w-[100px] sm:min-w-[140px] h-12 sm:h-16 flex items-center justify-center\">\n                        <img decoding=\"async\" src=\"https:\/\/czechpeptide.com\/wp-content\/uploads\/2026\/09\/pubchem.png\" alt=\"PubChem\" class=\"max-h-full max-w-full object-contain\">\n                    <\/div>\n                    <div class=\"bg-white border border-purple-100 p-2 sm:p-3 rounded-lg shadow-sm min-w-[100px] sm:min-w-[140px] h-12 sm:h-16 flex items-center justify-center\">\n                        <img decoding=\"async\" src=\"https:\/\/czechpeptide.com\/wp-content\/uploads\/2026\/09\/chemickelisty.png\" alt=\"Chemicke Listy\" class=\"max-h-full max-w-full object-contain\">\n                    <\/div>\n                    <div class=\"bg-white border border-purple-100 p-2 sm:p-3 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