{"id":541,"date":"2026-06-07T23:41:37","date_gmt":"2026-06-07T23:41:37","guid":{"rendered":"https:\/\/biosynlab.com\/?post_type=product&p=541"},"modified":"2026-06-23T02:28:16","modified_gmt":"2026-06-23T02:28:16","slug":"mk-2866-ostarine-capsules","status":"publish","type":"product","link":"https:\/\/www.biosynlab.com\/?product=mk-2866-ostarine-capsules","title":{"rendered":"MK-2866 (Ostarine) Capsules"},"content":{"rendered":"

MK-2866 (Ostarine) Capsules: Industrial Grade Research Chemical<\/h1>\n

 <\/p>\n

Product Details Table<\/strong><\/h2>\n

 <\/p>\n

\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Attribute<\/strong><\/th>\nSpecification<\/strong><\/th>\n<\/tr>\n<\/thead>\n
Brand<\/strong><\/td>\nBioSynLab Research Compounds<\/td>\n<\/tr>\n
Product Name<\/strong><\/td>\nMK-2866 (Ostarine)<\/td>\n<\/tr>\n
Synonyms<\/strong><\/td>\nOstarine, Enobosarm, GTX-024, S-22<\/td>\n<\/tr>\n
CAS Number<\/strong><\/td>\n841205-47-8<\/td>\n<\/tr>\n
Molecular Formula<\/strong><\/td>\nC\u2081\u2089H\u2081\u2084F\u2083N\u2083O\u2083<\/td>\n<\/tr>\n
Molecular Weight<\/strong><\/td>\n389.33 g\/mol<\/td>\n<\/tr>\n
Chemical Class<\/strong><\/td>\nSelective Androgen Receptor Modulator (SARM)<\/td>\n<\/tr>\n
Purity<\/strong><\/td>\n\u226599.0% (HPLC Verified)<\/td>\n<\/tr>\n
Dosage Form<\/strong><\/td>\nHard Gelatin Capsules<\/td>\n<\/tr>\n
Unit Dose<\/strong><\/td>\n10mg, 20mg, or 25mg (custom available)<\/td>\n<\/tr>\n
Capsule Size<\/strong><\/td>\nSize 3 (10mg), Size 1 (20mg), Size 0 (25mg)<\/td>\n<\/tr>\n
Capsule Color<\/strong><\/td>\nWhite opaque (10mg), Blue\/White (20mg), Blue (25mg)<\/td>\n<\/tr>\n
Fill Weight<\/strong><\/td>\n150-300mg (API + excipients)<\/td>\n<\/tr>\n
Excipients<\/strong><\/td>\nMicrocrystalline cellulose, Magnesium stearate, Talc<\/td>\n<\/tr>\n
Packaging<\/strong><\/td>\nHDPE bottles (30, 60, 90 count) or blister packs<\/td>\n<\/tr>\n
Storage<\/strong><\/td>\n2-25\u00b0C, Desiccated, Light Protected<\/td>\n<\/tr>\n
Shelf Life<\/strong><\/td>\n24 months (sealed container)<\/td>\n<\/tr>\n
Documentation<\/strong><\/td>\nCOA, HPLC, NMR, MS, MSDS, Stability Data<\/td>\n<\/tr>\n
Shipping<\/strong><\/td>\nAmbient Temperature, Discrete<\/td>\n<\/tr>\n
Origin<\/strong><\/td>\nEU\/GMP Certified Laboratory<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
\n

<\/h2>\n

MK-2866 (Ostarine) Capsules | Selective Androgen Receptor Modulator (SARM) | BioSynLab<\/a><\/strong><\/h3>\n

BioSynLab<\/strong>\u00a0presents\u00a0pharmaceutical-grade MK-2866 (Ostarine)<\/strong><\/a>\u00a0in\u00a0convenient capsule formulation<\/strong>\u00a0for\u00a0advanced androgen receptor research<\/strong>\u00a0and\u00a0tissue-selective anabolic studies<\/strong>. As one of the\u00a0most extensively characterized SARMs<\/strong>\u00a0in the\u00a0scientific literature<\/strong>, Ostarine serves as a\u00a0critical reference compound<\/strong>\u00a0for investigating\u00a0androgen receptor (AR) partial agonism<\/strong>,\u00a0anabolic\/androgenic separation<\/strong>, and\u00a0therapeutic applications<\/strong>\u00a0in\u00a0muscle wasting<\/strong>\u00a0and\u00a0osteoporosis research<\/strong>.<\/p>\n

Chemical Architecture & SARM Mechanism<\/strong><\/h3>\n

MK-2866 (Ostarine, Enobosarm)<\/strong>\u00a0is a\u00a0non-steroidal selective androgen receptor modulator<\/strong>\u00a0featuring a\u00a0distinctive bicyclic aryl propionamide scaffold<\/strong>:<\/p>\n

Structural Features:<\/strong><\/p>\n

    \n
  • Aryl Propionamide Core:<\/strong>\u00a0Non-steroidal structure providing\u00a0AR binding<\/strong>\u00a0without\u00a0steroidal side effects<\/strong><\/li>\n
  • Trifluoromethyl Substitution:<\/strong>\u00a0Electron-withdrawing group enhancing\u00a0metabolic stability<\/strong>\u00a0and\u00a0receptor affinity<\/strong><\/li>\n
  • Nitro\/Amino Substitution Pattern:<\/strong>\u00a0Critical pharmacophore for\u00a0SARM selectivity<\/strong><\/li>\n
  • Cyanide Substitution:<\/strong>\u00a0Contributes to\u00a0binding specificity<\/strong>\u00a0and\u00a0tissue selectivity<\/strong><\/li>\n<\/ul>\n

    Mechanism of Action:<\/strong><\/p>\n

      \n
    • Androgen Receptor Agonist:<\/strong>\u00a0Binds\u00a0AR with high affinity<\/strong>\u00a0(Ki ~3.5 nM)<\/li>\n
    • Tissue Selectivity:<\/strong>\u00a0Anabolic effects<\/strong>\u00a0in\u00a0muscle and bone<\/strong>\u00a0with\u00a0reduced androgenic activity<\/strong>\u00a0in\u00a0prostate and sebaceous glands<\/strong><\/li>\n
    • Partial Agonism:<\/strong>\u00a0Demonstrates\u00a0partial agonist activity<\/strong>\u00a0compared to\u00a0full agonists<\/strong>\u00a0(testosterone, DHT)<\/li>\n
    • Non-Steroidal:<\/strong>\u00a0Avoids\u00a05\u03b1-reductase<\/strong>\u00a0and\u00a0aromatase<\/strong>\u00a0metabolism<\/li>\n<\/ul>\n

      Physicochemical Properties:<\/strong><\/p>\n

        \n
      • Molecular weight:<\/strong>\u00a0389.33 g\/mol<\/li>\n
      • Calculated LogP:<\/strong>\u00a03.4 (moderate lipophilicity)<\/li>\n
      • pKa:<\/strong>\u00a0Non-ionizable (neutral molecule)<\/li>\n
      • Melting point:<\/strong>\u00a070-75\u00b0C (amorphous solid)<\/li>\n
      • Chirality:<\/strong>\u00a0Racemic mixture (R- and S-enantiomers)<\/li>\n<\/ul>\n

        Capsule Formulation & Pharmaceutical Engineering<\/strong><\/h3>\n

        Our\u00a0MK-2866 capsules<\/strong>\u00a0utilize\u00a0precision formulation technology<\/strong>:<\/p>\n

        Excipient Composition:<\/strong><\/p>\n

          \n
        • Active Pharmaceutical Ingredient:<\/strong>\u00a0MK-2866 \u2013 10mg, 20mg, or 25mg<\/li>\n
        • Diluent:<\/strong>\u00a0Microcrystalline cellulose (Avicel PH-102) \u2013 100-250mg<\/li>\n
        • Glidant:<\/strong>\u00a0Talc (pharmaceutical grade) \u2013 2-5mg<\/li>\n
        • Lubricant:<\/strong>\u00a0Magnesium stearate \u2013 1-3mg<\/li>\n<\/ul>\n

          Capsule Specifications:<\/strong><\/p>\n

          \n
          \n\n\n\n\n\n\n\n
          Strength<\/th>\nCapsule Size<\/th>\nFill Weight<\/th>\nColor Code<\/th>\n<\/tr>\n<\/thead>\n
          10mg<\/td>\nSize 3<\/td>\n~150mg<\/td>\nWhite opaque<\/td>\n<\/tr>\n
          20mg<\/td>\nSize 1<\/td>\n~220mg<\/td>\nBlue\/White<\/td>\n<\/tr>\n
          25mg<\/td>\nSize 0<\/td>\n~280mg<\/td>\nBlue<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

          Quality Attributes:<\/strong><\/p>\n

            \n
          • Content uniformity:<\/strong>\u00a0RSD <6% (USP <905>)<\/li>\n
          • Weight variation:<\/strong>\u00a0Meets USP <905> criteria<\/li>\n
          • Disintegration:<\/strong>\u00a0<30 minutes (USP <701>)<\/li>\n
          • Dissolution:<\/strong>\u00a0>80% in 45 minutes (simulated gastric fluid)<\/li>\n<\/ul>\n

            Packaging Options:<\/strong><\/p>\n

              \n
            • HDPE bottles:<\/strong>\u00a030, 60, 90 count with\u00a0desiccant canister<\/strong><\/li>\n
            • Blister packs:<\/strong>\u00a010 capsules per sheet,\u00a0child-resistant<\/strong><\/li>\n
            • Bulk packaging:<\/strong>\u00a0500, 1000 count for\u00a0institutional orders<\/strong><\/li>\n<\/ul>\n

              Analytical Characterization & Quality Verification<\/strong><\/h3>\n

              Each\u00a0BioSynLab MK-2866<\/strong>\u00a0batch undergoes\u00a0comprehensive analytical profiling<\/strong>:<\/p>\n

              Chromatographic Analysis:<\/strong><\/p>\n

                \n
              • HPLC-UV (220nm):<\/strong>\u00a0\u226599.0% purity by area normalization<\/li>\n
              • Chiral HPLC:<\/strong>\u00a0Enantiomeric ratio (racemic mixture, ~1:1)<\/li>\n
              • Related substances:<\/strong>\u00a0<1.0% total impurities<\/li>\n
              • Residual solvents:<\/strong>\u00a0Meets ICH Q3C (methanol, ethanol, acetonitrile, hexane)<\/li>\n<\/ul>\n

                Mass Spectrometry:<\/strong><\/p>\n

                  \n
                • LC-MS\/MS:<\/strong>\u00a0[M+H]\u207a at m\/z 390.1, characteristic fragmentation pattern<\/li>\n
                • High-Resolution MS:<\/strong>\u00a0Exact mass confirmation <5 ppm deviation<\/li>\n<\/ul>\n

                  Nuclear Magnetic Resonance (NMR):<\/strong><\/p>\n

                    \n
                  • \u00b9H NMR (500MHz, DMSO-d\u2086):<\/strong>\n
                      \n
                    • Aromatic protons: \u03b4 6.8-7.6 (m, 8H)<\/li>\n
                    • Amide NH: \u03b4 8.45 (br s, 1H)<\/li>\n
                    • CF\u2083: \u03b4 Not observed (fluorine coupling in \u00b9\u2079F NMR)<\/li>\n
                    • Methine CH: \u03b4 3.12 (m, 1H)<\/li>\n<\/ul>\n<\/li>\n
                    • \u00b9\u2079F NMR:<\/strong>\u00a0Single peak at \u03b4 -62.5 ppm (trifluoromethyl)<\/li>\n
                    • \u00b9\u00b3C NMR (125MHz):<\/strong>\u00a019 distinct carbon signals<\/li>\n
                    • FTIR:<\/strong>\u00a0Amide N-H (3300 cm\u207b\u00b9), C=O (1660 cm\u207b\u00b9), C-F (1120 cm\u207b\u00b9)<\/li>\n<\/ul>\n

                      Physical Testing:<\/strong><\/p>\n

                        \n
                      • Water content:<\/strong>\u00a0<0.5% (Karl Fischer)<\/li>\n
                      • Heavy metals:<\/strong>\u00a0<10 ppm (ICP-MS)<\/li>\n
                      • Residue on ignition:<\/strong>\u00a0<0.1%<\/li>\n<\/ul>\n

                        Research Applications & Scientific Significance<\/strong><\/h3>\n

                        MK-2866 capsules<\/strong>\u00a0serve critical functions in\u00a0multiple research disciplines<\/strong>:<\/p>\n

                        Androgen Receptor Pharmacology:<\/strong><\/p>\n

                          \n
                        • AR binding affinity<\/strong>\u00a0determination (competition vs. [\u00b3H]-DHT)<\/li>\n
                        • Coactivator recruitment<\/strong>\u00a0assays (SRC-1, GRIP1)<\/li>\n
                        • Tissue-selective gene expression<\/strong>\u00a0(muscle vs. prostate)<\/li>\n
                        • Partial agonist characterization<\/strong>\u00a0(transcriptional activity)<\/li>\n<\/ul>\n

                          Musculoskeletal Research:<\/strong><\/p>\n

                            \n
                          • Muscle atrophy<\/strong>\u00a0models (denervation, disuse, cancer cachexia)<\/li>\n
                          • Sarcopenia<\/strong>\u00a0studies (age-related muscle loss)<\/li>\n
                          • Bone density<\/strong>\u00a0and\u00a0osteoporosis<\/strong>\u00a0research<\/li>\n
                          • Fracture healing<\/strong>\u00a0acceleration models<\/li>\n<\/ul>\n

                            Metabolic Studies:<\/strong><\/p>\n

                              \n
                            • Body composition<\/strong>\u00a0analysis (lean mass vs. fat mass)<\/li>\n
                            • Glucose homeostasis<\/strong>\u00a0(insulin sensitivity)<\/li>\n
                            • Lipid metabolism<\/strong>\u00a0(cholesterol, triglycerides)<\/li>\n
                            • Energy expenditure<\/strong>\u00a0quantification<\/li>\n<\/ul>\n

                              Comparative SARM Research:<\/strong><\/p>\n

                                \n
                              • Structure-activity relationships<\/strong>\u00a0(SARM scaffold comparisons)<\/li>\n
                              • Selectivity profiling<\/strong>\u00a0(vs. other SARMs: LGD-4033, RAD-140, S4)<\/li>\n
                              • Efficacy comparisons<\/strong>\u00a0(vs. testosterone, DHT)<\/li>\n
                              • Safety profiling<\/strong>\u00a0(hepatotoxicity, cardiovascular)<\/li>\n<\/ul>\n

                                Clinical Translation Research:<\/strong><\/p>\n

                                  \n
                                • Dose-response relationships<\/strong>\u00a0( Phase I\/II modeling)<\/li>\n
                                • Pharmacokinetic studies<\/strong>\u00a0(t\u00bd ~24 hours, oral bioavailability ~90%)<\/li>\n
                                • Therapeutic window<\/strong>\u00a0determination<\/li>\n
                                • Biomarker identification<\/strong>\u00a0(IGF-1, testosterone, SHBG)<\/li>\n<\/ul>\n

                                  Global Distribution & Discrete Procurement<\/strong><\/h3>\n

                                  BioSynLab provides\u00a0secure, compliant distribution<\/strong>:<\/p>\n

                                  Packaging Specifications:<\/strong><\/p>\n

                                    \n
                                  • Primary:<\/strong>\u00a0Hard gelatin capsules in\u00a0HDPE bottles<\/strong>\u00a0or\u00a0blister packs<\/strong><\/li>\n
                                  • Secondary:<\/strong>\u00a0Tamper-evident seals<\/strong>,\u00a0desiccant chambers<\/strong><\/li>\n
                                  • Tertiary:<\/strong>\u00a0Discrete unmarked shipping containers<\/strong><\/li>\n<\/ul>\n

                                    Shipping Options:<\/strong><\/p>\n

                                      \n
                                    • Standard:<\/strong>\u00a0Ambient temperature, 5-7 days<\/li>\n
                                    • Express:<\/strong>\u00a0Tracked courier, 2-3 days<\/li>\n
                                    • Discrete:<\/strong>\u00a0No product identifiers, generic return addresses<\/li>\n<\/ul>\n

                                      Service Coverage:<\/strong><\/p>\n

                                      United Kingdom:<\/strong>\u00a0London, Manchester, Birmingham, Leeds, Glasgow, Liverpool, Sheffield, Bristol, Edinburgh, Cardiff, Belfast, Nottingham, Leicester.<\/p>\n

                                      European Union:<\/strong>\u00a0Berlin, Hamburg, Munich, Cologne, Frankfurt, Amsterdam, Rotterdam, Paris, Lyon, Barcelona, Madrid, Rome, Milan, Vienna, Brussels, Prague, Warsaw.<\/p>\n

                                      North America:<\/strong>\u00a0New York, Los Angeles, Chicago, Houston, Philadelphia, San Antonio, San Diego, Dallas, San Jose, Austin, Toronto, Vancouver.<\/p>\n","protected":false},"excerpt":{"rendered":"

                                      MK-2866 (Ostarine) Capsules: Industrial Grade Research Chemical   Product Details Table   Attribute Specification Brand BioSynLab Research Compounds Product Name MK-2866 (Ostarine) Synonyms Ostarine, Enobosarm, GTX-024, S-22 CAS Number 841205-47-8 Molecular Formula C\u2081\u2089H\u2081\u2084F\u2083N\u2083O\u2083 Molecular Weight 389.33 g\/mol Chemical Class Selective Androgen Receptor Modulator (SARM) Purity \u226599.0% (HPLC Verified) Dosage Form Hard Gelatin Capsules Unit Dose […]<\/p>\n","protected":false},"featured_media":571,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[2275,2237],"product_tag":[16698,16699,16700,16701,16702,16703,16704,16705,16706,16707,16708,16709,16710,16711,16712,16713,16714,16715,16716,16717,16718,16719,16720,16721,16722,16723,16724,16725,16726,16727,16728,16729,16730,16731,16732,16733,16734,16735,16736,16737],"class_list":["post-541","product","type-product","status-publish","has-post-thumbnail","product_cat-muscle-growth-bulking","product_cat-sarms-next-lvl-muscle","product_tag-buy-mk-2866-capsules-austin","product_tag-buy-mk-2866-capsules-leuven","product_tag-buy-mk-2866-capsules-limerick","product_tag-buy-mk-2866-capsules-madrid","product_tag-buy-mk-2866-capsules-online-toronto","product_tag-buy-mk-2866-zurich-lab-grade","product_tag-buy-ostarine-capsules-osaka","product_tag-mk-2866-capsules-abu-dhabi-wholesale","product_tag-mk-2866-capsules-amsterdam-buy-now","product_tag-mk-2866-capsules-bangkok-buy-in-bulk","product_tag-mk-2866-capsules-berlin-online-shop","product_tag-mk-2866-capsules-bologna-supplier","product_tag-mk-2866-capsules-bruges-supplier","product_tag-mk-2866-capsules-bulk-supplier-krakow","product_tag-mk-2866-capsules-calgary-for-sale","product_tag-mk-2866-capsules-dubai-bulk-order","product_tag-mk-2866-capsules-for-sale-in-salzburg","product_tag-mk-2866-capsules-for-sale-nagoya","product_tag-mk-2866-capsules-geneva-order-online","product_tag-mk-2866-capsules-gothenburg-bulk","product_tag-mk-2866-capsules-halifax-supplier","product_tag-mk-2866-capsules-houston-research","product_tag-mk-2866-capsules-in-klagenfurt","product_tag-mk-2866-capsules-ljubljana-for-sale","product_tag-mk-2866-capsules-luxembourg-bulk-supply","product_tag-mk-2866-capsules-marseille-lab-supply","product_tag-mk-2866-capsules-netherlands-distributor","product_tag-mk-2866-capsules-ottawa-bulk","product_tag-mk-2866-capsules-plovdiv-research-grade","product_tag-mk-2866-capsules-porto-bulk-order","product_tag-mk-2866-capsules-prague-research-use","product_tag-mk-2866-capsules-riyadh-distributor","product_tag-mk-2866-capsules-san-diego-supply","product_tag-mk-2866-capsules-sofia-supply-chain","product_tag-mk-2866-capsules-tampa-wholesale","product_tag-mk-2866-capsules-tokyo-order","product_tag-mk-2866-capsules-toulouse-for-labs","product_tag-mk-2866-capsules-valencia-lab-use","product_tag-mk-2866-capsules-vancouver-buy-online","product_tag-mk-2866-capsules-vienna-for-research","first","instock","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"\nBuy MK-2866 Capsules \u2013 Lean Muscle Support & Bulk Orders<\/title>\n<meta name=\"description\" content=\"Buy MK-2866 Ostarine capsules online at BioSynLab. \u226599% purity SARM, lab-tested. 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