Liquid YK-11 – 10 mg/mL

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Independently verifiedEvery batch is HPLC-tested by an accredited US third-party lab for purity and identity. Research use onlySupplied exclusively for laboratory investigation and development. Technical data Product specifications Specifications Lab Reports Storage & Handling Liquid YK-11 — 10 mg/mL Compound Class Selective Androgen Receptor Modulator (SARM) · Steroidal · Androgen receptor partial agonist Concentration 10 mg/mL Composition USP-grade PEG-400 base, YK-11 (≥98% purity) CAS Number 1370003-76-1Copy Chemical Formula C25H34O6Copy Molar Mass 430.54 g/mol Synonyms YK-11, YK11 Volume 30 mL per bottle (300 mg total) Verified Purity Batch-tested to 98.76% (HPLC) Terms For laboratory research use only. Not for human or animal consumption. View certificates of analysis Independently verified98.76% 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. Published certificates of analysis Our third-party certificates of analysis are published on our website — 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 YK-11, 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 YK-11 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 YK-11? YK-11 is a synthetic steroidal compound that acts as a partial agonist of the androgen receptor in vitro. It is structurally derived from a steroidal backbone and is orally bioavailable in study models. It was first described in the research literature by Kanno et al. in 2011 (ref. 1). YK-11 is commonly catalogued among selective androgen receptor modulators (SARMs). It remains an experimental research chemical, 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 YK-11 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), banned both in- and out-of-competition (ref. 3). Legal status varies by jurisdiction In the United States, YK-11 is not a federally controlled substance and may be legally purchased and possessed for laboratory research use. Its legal status differs in other countries, where it may be restricted or controlled. 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 Kanno Y, Hikosaka R, Zhang SY, et al. (17α,20E)-17,20-[(1-methoxyethylidene)bis(oxy)]-3-oxo-19-norpregna-4,20-diene-21-carboxylic acid methyl ester (YK-11) is a partial agonist of the androgen receptor. Biol Pharm Bull. 2011;34(3):318–323. 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”:”YK-11″,”alternateName”:[“YK-11″,”YK11″],”identifier”:[{“@type”:”PropertyValue”,”propertyID”:”CAS”,”value”:”1370003-76-1″}],”molecularFormula”:”C25H34O6″,”molecularWeight”:”430.54 g/mol”,”description”:”Liquid YK-11, 10 mg/mL, a synthetic steroidal androgen receptor partial agonist catalogued among selective androgen receptor modulators (SARMs), supplied for laboratory research use only. 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