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width:21px;height:21px;background:var(–c-forest);color:var(–c-lime);border-radius:6px; font-size:.72rem;font-weight:800;display:flex;align-items:center;justify-content:center} .stl-note{margin-top:8px;padding:16px 18px;border-left:4px solid var(–c-green);background:#f2f7f4; border-radius:0 10px 10px 0;font-size:.85rem;color:var(–c-mut)} .stl-note b{color:var(–c-logo)} .stl-pdp–nojs .stl-spec__tabs{display:none} .stl-pdp–nojs .stl-spec__panel[hidden]{display:block} .stl-pdp–nojs .stl-spec__panel + .stl-spec__panel{border-top:1px solid var(–c-line)} @media (max-width:760px){ .stl-grid4{grid-template-columns:1fr 1fr} .stl-feat,.stl-reg__grid{grid-template-columns:1fr} .stl-spec__table th{width:46%} } @media (max-width:440px){.stl-grid4{grid-template-columns:1fr}} @media (prefers-reduced-motion:reduce){.stl-pdp *{transition:none!important}} .stl-pdp{font-size:16px} .stl-pdp p,.stl-pdp li,.stl-pdp td,.stl-pdp th,.stl-pdp .stl-spec__table{font-size:16px;line-height:1.65} .stl-pdp .stl-chip span,.stl-pdp .stl-sub,.stl-pdp .stl-feat p,.stl-pdp .stl-reg__card p,.stl-pdp .stl-trust__row p,.stl-pdp .stl-refs li,.stl-pdp .stl-note,.stl-pdp .stl-copy__btn,.stl-pdp .stl-btn,.stl-pdp .stl-spec__tab{font-size:16px} .stl-pdp h3{font-size:1.4rem} .stl-pdp h2{font-size:clamp(2rem,3vw,2.5rem)} .stl-pdp .eyebrow,.stl-pdp .eyebrow–lime{font-size:14px} .stl-pdp .stl-pill{font-size:14px} .stl-pdp .stl-coa figcaption{font-size:14px} .stl-pdp .stl-refs li::before{font-size:14px} .stl-pdp .stl-spec__table sub{font-size:14px} .stl-pdp .stl-spec__table caption{font-size:18px} .stl-pdp .stl-seq{font-size:13px} Why this peptide Key highlights 5 mg lyophilized vialFreeze-dried peptide in a sterile, UV-resistant glass vial. 99.95% HPLC purityEach lot analyzed by an accredited US third-party lab via HPLC and mass spectrometry. Cold-chain peptideRefrigerate after reconstitution. Diluent and lab supplies not included. Research use onlySupplied exclusively for laboratory investigation and development. Technical data Product specifications Specifications Lab Reports Storage & Handling Tesamorelin — 5 mg lyophilized Compound Class Synthetic Polypeptide · Stabilized GHRH(1–44) analog · GHRH Receptor Agonist Form Lyophilized powder in sterile glass vial Quantity 5 mg per vial CAS Number 901758-09-6Copy (acetate salt) Chemical Formula C223H370N72O69SCopy (acetate salt; free base C221H366N72O67S) Molar Mass ≈5195.9 g/mol (acetate salt) · ≈5135.9 g/mol (free base) Structure Stabilized analog of the 44-residue form of GHRH — GHRH(1–44) — bearing a trans-3-hexenoyl group at the N-terminus and a C-terminal amide Synonyms Tesamorelin, Tesamorelin acetate, TH9507, (trans-3-hexenoyl)-hGRF(1–44)-NH2 Verified Purity Batch-tested to 99.95% (HPLC) For laboratory research use only. Not for human or animal consumption. View certificates of analysis Independently verified This peptide is analyzed by an accredited US third-party laboratory before it ships. Accredited testing partner Identity and purity confirmed by MZ Biolabs (Tucson, AZ), a US DEA-licensed analytical facility, via HPLC purity analysis and mass-spectrometry identity confirmation under GLP standards. Published certificates of analysis Our third-party certificates of analysis are published on our website — no login required. Tesamorelin99.95% pure Most recent batch certificate of analysis for Tesamorelin, issued by MZ Biolabs (Tucson, AZ). Tap to view full size. See all certificates of analysis Storage & handling Peptides are photo- and temperature-sensitive; handle per standard laboratory practice. Lyophilized storage: Keep the sealed vial cool, dry, and away from direct light. For long-term storage, freezing (e.g. −20 °C) is standard practice for lyophilized peptides. After reconstitution: Refrigerate (approximately 2–8 °C) and follow your institution’s SOPs for aliquoting, handling, and disposal. Avoid repeated freeze–thaw cycles. Diluent not included: Reconstitution supplies are not provided. A mild acidic diluent (e.g. 0.6% acetic acid) is commonly used for this peptide; bacteriostatic water and compatible buffers are also referenced for research use. UV-resistant glass vial to help protect photo-labile peptides during storage. Tamper-evident seal to support chain-of-custody and inventory controls. Sourcing & quality Why source Tesamorelin from Sports Technology Labs Quality control across the research-peptide industry is inconsistent, and many suppliers do not publish third-party testing for their products. Independent verification of identity and purity is essential for reproducible research. Third-party tested & certified Verified by MZ Biolabs (Tucson, AZ), an accredited US laboratory, via HPLC and mass spectrometry, with batch-linked COAs. Lyophilized & packaged in America Freeze-dried into sterile, UV-resistant glass vials and packaged in the USA. Tamper-evident packaging Supports chain-of-custody, label transparency, and batch-linked traceability. 60-day money-back guarantee Transparent business, standard payment methods, no misrepresentation. Research context What is Tesamorelin? Tesamorelin is a synthetic analog of growth hormone-releasing hormone (GHRH). Structurally, it is a stabilized analog of the 44-amino-acid form of GHRH — GHRH(1–44) — modified at the N-terminus with a trans-3-hexenoyl group and amidated at the C-terminus, modifications that increase its stability relative to native GHRH. Mechanistically, it acts as an agonist at the GHRH receptor. Like other GHRH analogs, and unlike ghrelin-mimetic secretagogues, it does not act through the GHS-R1a (ghrelin) receptor. It is used as a research chemical to investigate GHRH-receptor signaling in experimental models. Tesamorelin is supplied here strictly as a research chemical for laboratory research. Sports Technology Labs makes no claims regarding its effects, and nothing in this listing should be interpreted as describing outcomes in humans or animals. Regulatory & compliance status Important regulatory information Supplied as a research chemical Tesamorelin is the active ingredient in an FDA-approved prescription drug (marketed as Egrifta). However, this material is supplied as a research chemical — not as an approved drug product — and is not for human or animal use. It is not a dietary supplement or sports supplement. WADA-prohibited Growth hormone-releasing hormone (GHRH) and its analogues, including tesamorelin, are prohibited by the World Anti-Doping Agency at all times under S2 (Peptide Hormones, Growth Factors, Related Substances and Mimetics) (ref. 3). Legal status for research In the United States, tesamorelin is supplied for laboratory research use. Other jurisdictions may regulate it differently. Our position Sports Technology Labs are chemical suppliers, not medical providers. We do not condone or encourage consumer use of research compounds. Citations Scientific references Granata R, Leone S, Zhang X, Gesmundo I, Steenblock C, Cai R, et al. Growth hormone-releasing hormone and its analogues in health and disease. Nat Rev Endocrinol. 2024;21:180–195. National Center for Biotechnology Information. PubChem Compound Summary for Tesamorelin (CAS 901758-09-6): molecular formula and molecular weight. PubChem, National Library of Medicine. WADA Prohibited List (2025), Section S2: Peptide Hormones, Growth Factors, Related Substances and Mimetics (Growth Hormone-Releasing Hormone and its analogues). WADA.org. Research use only. All products on this website are intended exclusively for laboratory research and development. They are not for human or animal consumption. These statements have not been evaluated by the U.S. Food and Drug Administration, and these products are not intended to diagnose, treat, cure, or prevent any disease. {“@context”:”https://schema.org”,”@type”:”ChemicalSubstance”,”name”:”Tesamorelin”,”alternateName”:[“Tesamorelin”,”Tesamorelin acetate”,”TH9507″,”(trans-3-hexenoyl)-hGRF(1-44)-NH2″],”identifier”:[{“@type”:”PropertyValue”,”propertyID”:”CAS”,”value”:”901758-09-6″}],”molecularFormula”:”C223H370N72O69S”,”molecularWeight”:”5195.9 g/mol (acetate salt)”,”description”:”Tesamorelin, 5 mg lyophilized, a synthetic stabilized GHRH(1-44) analog and GHRH receptor agonist, supplied for laboratory research use only. Third-party tested to 99.95% purity.”,”hasBioChemEntityPart”:”Synthetic polypeptide; stabilized GHRH(1-44) analog; GHRH receptor agonist”} (function(){ var root=document.currentScript&&document.currentScript.closest(‘[data-stl-spec]’); if(!root){var all=document.querySelectorAll(‘[data-stl-spec]’);root=all[all.length-1];} if(!root||root.dataset.stlInit)return;root.dataset.stlInit=’1′; root.classList.remove(‘stl-pdp–nojs’); var tabs=[].slice.call(root.querySelectorAll(‘[role=”tab”]’)); var panels=tabs.map(function(t){return root.querySelector(‘#’+t.getAttribute(‘aria-controls’));}); function select(i){tabs.forEach(function(t,j){var on=j===i;t.setAttribute(‘aria-selected’,on?’true’:’false’);t.tabIndex=on?0:-1;if(panels[j])panels[j].hidden=!on;});} tabs.forEach(function(t,i){ t.addEventListener(‘click’,function(){select(i);}); t.addEventListener(‘keydown’,function(e){var n; if(e.key===’ArrowRight’||e.key===’ArrowDown’)n=(i+1)%tabs.length; else if(e.key===’ArrowLeft’||e.key===’ArrowUp’)n=(i-1+tabs.length)%tabs.length; else if(e.key===’Home’)n=0;else if(e.key===’End’)n=tabs.length-1;else return; e.preventDefault();select(n);tabs[n].focus();}); }); root.querySelectorAll(‘[data-stl-copy]’).forEach(function(btn){ btn.addEventListener(‘click’,function(){var v=btn.getAttribute(‘data-stl-copy’); var done=function(){btn.dataset.copied=’1′;var o=btn.textContent;btn.textContent=’Copied’;setTimeout(function(){btn.dataset.copied=”;btn.textContent=o;},1400);}; if(navigator.clipboard&&navigator.clipboard.writeText){navigator.clipboard.writeText(v).then(done).catch(done);} else{var ta=document.createElement(‘textarea’);ta.value=v;document.body.appendChild(ta);ta.select();try{document.execCommand(‘copy’);}catch(e){}document.body.removeChild(ta);done();} }); }); })(); (function(){var s=document.querySelectorAll(‘[data-stl-spec]’);var el=s[s.length-1];if(el&&!el.dataset.stlInit)el.classList.add(‘stl-pdp–nojs’);})(); FAQs for Tesamorelin Peptide What are the storage conditions for Tesamorelin? Tesamorelin should be stored in a cool, dry place away from direct sunlight. For optimal stability, long-term storage at -20°C is recommended. How is Tesamorelin packaged to ensure quality and minimize injection site reactions in testing facilities? Tesamorelin is packaged in a glass vial with a secure seal to prevent contamination. It is shipped in tamper-proof packaging to ensure safety and integrity during transit.
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