
$53.99
See if it's really the one
Search with this product to compare it, find similar styles, or turn up something better before deciding.
.stl-pdp{ /* —- Brand palette (from STL brand sheet) —- */ –c-logo:#062021; –c-deep:#081c17; –c-forest:#0a3721; –c-green:#0ea43c; –c-lime:#91c72e; –c-grey:#e0e0e0; –c-white:#ffffff; –c-ink:#0d2a22; /* body text on white */ –c-mut:#52635c; /* muted text on white */ –c-line:#e3e9e6; /* hairline on white */ –c-line-d:rgba(255,255,255,.14); /* hairline on dark */ –c-mut-d:#aebfb7; /* muted text on dark */ max-width:1000px;margin:0 auto;color:var(–c-ink); font-family:”Helvetica Neue”,Arial,system-ui,-apple-system,Segoe UI,Roboto,sans-serif; line-height:1.6;-webkit-font-smoothing:antialiased; } .stl-pdp *{box-sizing:border-box} .stl-pdp h2,.stl-pdp h3{letter-spacing:-.02em;line-height:1.15;color:var(–c-logo)} .stl-pdp h2{font-size:clamp(1.5rem,3.4vw,2.1rem);font-weight:800;margin:0 0 .5rem} .stl-pdp h3{font-size:1.18rem;font-weight:800;margin:0 0 .35rem} .stl-pdp p{margin:0 0 1rem} .stl-pdp .eyebrow{display:inline-block;font-size:.74rem;font-weight:800;letter-spacing:.14em; text-transform:uppercase;color:var(–c-green);margin-bottom:.7rem} .stl-pdp .eyebrow–lime{color:var(–c-lime)} .stl-pdp a{color:var(–c-green);text-decoration:underline;text-underline-offset:2px;font-weight:600} .stl-pdp section{padding:46px 4px} .stl-pdp section + section{border-top:1px solid var(–c-line)} /* ———- BUTTONS ———- */ .stl-pdp .stl-btn{display:inline-block;background:var(–c-green);color:#fff;text-decoration:none;font-weight:800; font-size:.95rem;padding:13px 24px;border-radius:11px;transition:transform .15s,background .18s;border:0;cursor:pointer} .stl-pdp .stl-btn:hover{background:#0bbf45;color:#fff;transform:translateY(-1px)} .stl-pdp .stl-btn–ghost{background:transparent;color:var(–c-lime);border:1.5px solid rgba(145,199,46,.5);text-decoration:none} .stl-pdp .stl-btn–ghost:hover{background:rgba(145,199,46,.12);color:var(–c-lime)} /* ———- HIGHLIGHT CHIPS ———- */ .stl-grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px} .stl-chip{background:var(–c-white);border:1px solid var(–c-line);border-radius:14px;padding:20px 18px} .stl-chip svg{width:26px;height:26px;color:var(–c-green);margin-bottom:10px} .stl-chip b{display:block;color:var(–c-logo);font-size:.98rem;margin-bottom:3px} .stl-chip span{font-size:.86rem;color:var(–c-mut)} /* ———- SPEC CARD (tabbed) — light treatment ———- */ .stl-spec{background:#fff;border:1px solid var(–c-line);border-radius:18px;overflow:hidden;color:var(–c-ink); box-shadow:0 1px 2px rgba(6,32,33,.04),0 14px 40px rgba(10,55,33,.08)} .stl-spec__tabs{display:flex;gap:4px;background:#f1f6f3;padding:7px;flex-wrap:wrap;border-bottom:1px solid var(–c-line)} .stl-spec__tab{appearance:none;border:0;background:transparent;cursor:pointer;font:inherit;font-weight:700; font-size:.92rem;color:var(–c-mut);padding:11px 18px;border-radius:10px;transition:background .18s,color .18s; flex:1 1 auto;min-width:120px;text-align:center} .stl-spec__tab:hover{color:var(–c-logo)} .stl-spec__tab[aria-selected=”true”]{background:var(–c-forest);color:#fff;box-shadow:0 3px 12px rgba(10,55,33,.28)} .stl-spec__tab:focus-visible{outline:3px solid var(–c-green);outline-offset:2px} .stl-spec__panel{padding:28px clamp(20px,3vw,34px) 34px} .stl-spec__panel[hidden]{display:none} .stl-spec__table{width:100%;border-collapse:collapse;font-size:.95rem} .stl-spec__table caption{text-align:left;font-weight:800;color:var(–c-logo);font-size:1.06rem;padding-bottom:16px} .stl-spec__table th,.stl-spec__table td{text-align:left;padding:13px 4px;border-bottom:1px solid var(–c-line);vertical-align:top} .stl-spec__table tr:last-child th,.stl-spec__table tr:last-child td{border-bottom:0} .stl-spec__table th{width:38%;font-weight:700;color:var(–c-ink)} .stl-spec__table td{color:var(–c-mut)} .stl-spec__table tbody tr:hover{background:#f6faf8} .stl-spec__table sub{font-size:.72em} .stl-copy{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap} .stl-copy__btn{appearance:none;border:1px solid var(–c-line);background:#fff;border-radius:7px; cursor:pointer;font:inherit;font-size:.74rem;font-weight:700;color:var(–c-green);padding:3px 9px;transition:background .15s,border-color .15s} .stl-copy__btn:hover{background:#f1f6f3;border-color:var(–c-green)} .stl-copy__btn:focus-visible{outline:2px solid var(–c-green);outline-offset:1px} .stl-copy__btn[data-copied=”1″]{color:#fff;background:var(–c-green);border-color:var(–c-green)} .stl-trust{display:grid;gap:13px} .stl-trust__row{display:flex;gap:13px;align-items:flex-start;padding:15px 17px;background:#f4f8f5;border-radius:12px} .stl-trust__ic{flex:0 0 auto;width:22px;height:22px;color:var(–c-green);margin-top:1px} .stl-trust__row b{color:var(–c-logo)} .stl-trust__row p{margin:4px 0 0;font-size:.9rem;color:var(–c-mut)} .stl-pill{display:inline-block;background:var(–c-lime);color:#062021;font-size:.76rem;font-weight:800;padding:3px 11px;border-radius:999px;margin-left:8px;vertical-align:middle} .stl-spec h3{color:var(–c-logo)} .stl-spec .stl-sub{color:var(–c-mut);font-size:.92rem;margin:0 0 18px} .stl-list{list-style:none;margin:0;padding:0;display:grid;gap:12px} .stl-list li{display:flex;gap:12px;align-items:flex-start;font-size:.94rem;color:var(–c-ink)} .stl-list li b{color:var(–c-logo)} .stl-list svg{flex:0 0 auto;width:18px;height:18px;color:var(–c-green);margin-top:3px} .stl-spec a.stl-btn{margin-top:20px} /* ———- COA IMAGE ———- */ .stl-coa{margin:6px 0 4px} .stl-coa img{display:block;width:100%;height:auto;border:1px solid var(–c-line);border-radius:12px;background:#fff} .stl-coa figcaption{font-size:.84rem;color:var(–c-mut);margin-top:8px} /* ———- QUALITY / EEAT ———- */ .stl-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:22px 0 6px} .stl-stat{background:var(–c-deep);color:#fff;border-radius:14px;padding:20px 18px;text-align:left} .stl-stat b{display:block;font-size:1.7rem;font-weight:800;color:var(–c-lime);line-height:1} .stl-stat span{display:block;font-size:.82rem;color:var(–c-mut-d);margin-top:7px} .stl-feat{display:grid;grid-template-columns:1fr 1fr;gap:14px 30px;margin-top:8px} .stl-feat div{display:flex;gap:11px;align-items:flex-start} .stl-feat svg{flex:0 0 auto;width:19px;height:19px;color:var(–c-green);margin-top:3px} .stl-feat b{color:var(–c-logo)} .stl-feat p{margin:2px 0 0;font-size:.9rem;color:var(–c-mut)} /* ———- REGULATORY BAND ———- */ .stl-reg{background:var(–c-deep);color:#fff;border-radius:18px;padding:clamp(26px,4vw,40px)} .stl-reg h2{color:#fff} .stl-reg .eyebrow{color:var(–c-lime)} .stl-reg__grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px} .stl-reg__card{background:rgba(255,255,255,.05);border:1px solid var(–c-line-d);border-radius:12px;padding:18px 20px} .stl-reg__card b{color:var(–c-lime);display:block;margin-bottom:5px;font-size:.95rem} .stl-reg__card p{margin:0;font-size:.9rem;color:var(–c-grey)} /* ———- REFERENCES ———- */ .stl-refs{font-size:.84rem;color:var(–c-mut);counter-reset:r;list-style:none;padding:0;margin:0;display:grid;gap:9px} .stl-refs li{padding-left:30px;position:relative} .stl-refs li::before{counter-increment:r;content:counter(r);position:absolute;left:0;top:0; 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} /* ———- DISCLAIMER ———- */ .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)} /* ———- NO-JS FALLBACK ———- */ .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-stats{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}} /* ———- READABILITY ———- */ .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-stat span,.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)} /* ———- FONT FLOOR: nothing below 14px, desktop + mobile ———- */ .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} Why this batch Key highlights Consistent suspension formulaBlended in USP-grade PEG-400 to maintain stability and accurate solubility across research applications. 25 mg/mL concentration30 mL bottle (750 mg total) with under 5% concentration variance for reproducible results. Independently verifiedEach lot is HPLC-tested by an accredited US third-party lab for identity and concentration accuracy. Research use onlySupplied exclusively for laboratory investigation and development. Technical data Product specifications Specifications Lab Reports Storage & Handling Liquid Ostarine (MK-2866) — 25 mg/mL Compound Class Selective Androgen Receptor Modulator (SARM) · Non-steroidal Concentration 25 mg/mL Composition USP-grade PEG-400 base, MK-2866 (≥98% purity) CAS Number 841205-47-8Copy Chemical Formula C19H14F3N3O3Copy Molar Mass 389.33 g/mol Half-Life ~24 hours Synonyms Ostarine, MK-2866, GTx-024, Enobosarm Volume 30 mL per bottle (750 mg total) Verified Purity Batch-tested to 98.04% (HPLC) Terms For laboratory research use only. Not for human or animal consumption. View certificates of analysis Independently verified98.04% pure Every batch is analyzed by an accredited US third-party laboratory before it ships. Accredited testing partner Purity and identity confirmed by MZ Biolabs (Tucson, AZ), a US DEA-licensed analytical facility, via HPLC purity analysis and mass-spectrometry identity confirmation under GLP standards. Public certificates of analysis Every COA is published openly, batch-dated, and matched to the product you receive — no login required. Under 5% concentration variance Each bottle is formulated and verified for consistent label-to-bottle accuracy across studies. Most recent batch certificate of analysis for Ostarine (MK-2866), issued by MZ Biolabs (Tucson, AZ). Tap to view full size. See all certificates of analysis Storage & handling Built to preserve compound integrity throughout your research timeline. Storage: Keep in a cool, dry place away from direct sunlight to maximize shelf life. UV-resistant glass bottle with fixed glass dropper to minimize degradation and avoid plasticizer (BPA) leaching. Tamper-proof seal to ensure integrity in transit. Graduated 1 mL glass pipette included for precise measurement. Evaporation-resistant formulation and packaging for stable storage. Sourcing & quality Why source Ostarine from Sports Technology Labs Quality control across the research-compound industry is inconsistent, which makes third-party verification essential. A 2017 analysis published in JAMA examined 44 products marketed online as SARMs and reported wide gaps between labels and contents. 52%contained the labeled compound 39%contained an unapproved drug 25%contained an unlabeled substance 9%contained no active ingredient Source: Van Wagoner et al., JAMA, 2017 (ref. 2). Third-party tested & certified Verified by MZ Biolabs (Tucson, AZ), an accredited US laboratory, via HPLC and mass spectrometry. USP-grade PEG-400 Suspended in the highest grade carrier and bottled in America. Glass bottles, fixed glass droppers Prevents BPA leaching and avoids contamination from external tools. 60-day money-back guarantee Transparent business, standard payment methods, no misrepresentation. Research context What is Ostarine (MK-2866)? Ostarine (MK-2866) is a non-steroidal, orally bioavailable selective androgen receptor modulator (SARM). Mechanistically, it binds the androgen receptor with tissue-selective affinity, which distinguishes it from steroidal androgens. It was developed as an investigational compound by GTx, Inc. beginning in the late 1990s (ref. 1). Ostarine remains an experimental research chemical and is supplied strictly 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 Not approved for human use MK-2866 is an investigational compound. It is not approved by the FDA and is not a dietary supplement, drug, or food. Marketing it for human ingestion is unlawful. WADA-prohibited Listed by the World Anti-Doping Agency under S1 (Anabolic Agents — Selective Androgen Receptor Modulators) and prohibited by the NCAA, banned both in- and out-of-competition (ref. 3). Legal status for research In the United States, MK-2866 is not a controlled substance and may be legally purchased and possessed for laboratory research use. 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 Narayanan R, Mohler ML, Bohl CE, Miller DD, Dalton JT. Selective androgen receptor modulators in preclinical and clinical development. Nucl Recept Signal. 2008;6:e010. Van Wagoner RM, et al. Chemical composition and labeling of substances marketed as SARMs and sold via the internet. JAMA. 2017;318(20):2004–2010. WADA Prohibited List (2025), Section S1: Anabolic Agents — Selective Androgen Receptor Modulators (SARMs). 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”:”Ostarine (MK-2866)”,”alternateName”:[“MK-2866″,”Ostarine”,”GTx-024″,”Enobosarm”],”identifier”:[{“@type”:”PropertyValue”,”propertyID”:”CAS”,”value”:”841205-47-8″}],”molecularFormula”:”C19H14F3N3O3″,”molecularWeight”:”389.33 g/mol”,”description”:”Liquid Ostarine (MK-2866), 25 mg/mL, a non-steroidal selective androgen receptor modulator (SARM) supplied for laboratory research use only. Third-party tested to 98.04% purity.”,”hasBioChemEntityPart”:”Selective Androgen Receptor Modulator (SARM)”} (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’);})();
Have a question about this?
We currently ship within the US, with more countries coming soon.
Final cost and dates are confirmed at checkout.
🇺🇸 Ship from USA · On Agora since 2026
$53.99