{"id":544,"date":"2026-06-07T23:41:37","date_gmt":"2026-06-07T23:41:37","guid":{"rendered":"https:\/\/biosynlab.com\/?post_type=product&p=544"},"modified":"2026-06-23T02:44:53","modified_gmt":"2026-06-23T02:44:53","slug":"mk-677-ibutamoren-capsules","status":"publish","type":"product","link":"https:\/\/www.biosynlab.com\/?product=mk-677-ibutamoren-capsules","title":{"rendered":"MK-677 (Ibutamoren) Capsules"},"content":{"rendered":"

MK-677 (Ibutamoren) Capsules: Premium Industrial Grade Growth Hormone Secretagogue<\/h1>\n

 <\/p>\n

PRODUCT SPECIFICATIONS 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
Attribute<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Brand<\/strong><\/td>\nbiosynlab<\/td>\n<\/tr>\n
Product Name<\/strong><\/td>\nMK-677 Capsules (Ibutamoren)<\/td>\n<\/tr>\n
IUPAC Name<\/strong><\/td>\n(R)-1-(2-methylalanyl-O-(4-hydroxybutyl)-D-seryl)-1-(methylsulfonyl)-1,2-dihydrospiro[indole-3,4\u2032-piperidine] mesylate<\/td>\n<\/tr>\n
Common Names<\/strong><\/td>\nMK-677, Ibutamoren, Ibutamoren Mesylate, Nutrobal<\/td>\n<\/tr>\n
CAS Number<\/strong><\/td>\n159634-47-6 (free base) \/ 159752-10-0 (mesylate)<\/td>\n<\/tr>\n
Molecular Formula<\/strong><\/td>\nC\u2082\u2087H\u2083\u2086N\u2084O\u2085S \u00b7 CH\u2084O\u2083S (mesylate)<\/td>\n<\/tr>\n
Molecular Weight<\/strong><\/td>\n528.67 g\/mol (mesylate salt)<\/td>\n<\/tr>\n
Form<\/strong><\/td>\nGelatin Capsules<\/td>\n<\/tr>\n
Capsule Dosage<\/strong><\/td>\n10mg per capsule<\/td>\n<\/tr>\n
Pack Size<\/strong><\/td>\n30 capsules, 60 capsules, 90 capsules<\/td>\n<\/tr>\n
Purity<\/strong><\/td>\n\u226598.5% (HPLC)<\/td>\n<\/tr>\n
Chemical Class<\/strong><\/td>\nGrowth Hormone Secretagogue \/ Ghrelin Receptor Agonist<\/td>\n<\/tr>\n
Appearance<\/strong><\/td>\nWhite powder in clear gelatin capsules<\/td>\n<\/tr>\n
Storage<\/strong><\/td>\n2-8\u00b0C, desiccated, light-protected<\/td>\n<\/tr>\n
Packaging<\/strong><\/td>\nAmber pharmaceutical bottle with desiccant<\/td>\n<\/tr>\n
Shelf Life<\/strong><\/td>\n36 months when stored properly<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
\n

<\/h2>\n

Premium MK-677 Ibutamoren Capsules \u2013 Laboratory Grade GH Secretagogue<\/strong><\/h3>\n

biosynlab<\/strong>\u00a0delivers pharmaceutical-grade\u00a0MK-677 Capsules (Ibutamoren)<\/strong><\/a>\u00a0for sophisticated scientific research and analytical applications. As a premier supplier of growth hormone secretagogues to laboratories across the\u00a0USA, United Kingdom, and European Union<\/strong>, we provide researchers with precisely dosed, high-purity compounds essential for reproducible experimental protocols and cutting-edge endocrine research.<\/p>\n

Chemical Composition & Structure<\/strong><\/h4>\n

MK-677<\/strong>\u00a0(systematic name:\u00a0(R)-1-(2-methylalanyl-O-(4-hydroxybutyl)-D-seryl)-1-(methylsulfonyl)<\/a>-1,2-dihydrospiro[indole-3,4\u2032-piperidine] mesylate<\/strong>), commonly known as\u00a0Ibutamoren<\/strong>\u00a0or\u00a0Nutrobal<\/strong>, is a potent, orally active growth hormone secretagogue developed by Merck & Co. Unlike traditional SARMs that target androgen receptors, MK-677 functions as a ghrelin receptor agonist, stimulating the release of growth hormone from the pituitary gland. The molecular formula\u00a0C\u2082\u2087H\u2083\u2086N\u2084O\u2085S \u00b7 CH\u2084O\u2083S<\/strong>\u00a0yields a molecular weight of 528.67 g\/mol for the mesylate salt.<\/p>\n

The compound features a unique spiroindoline core with a piperidine ring, linked to a modified peptide moiety that mimics the action of ghrelin, the “hunger hormone.” This structural design enables oral bioavailability and extended half-life compared to peptide-based growth hormone-releasing hormones (GHRH).<\/p>\n

Capsule Advantages for Research<\/strong><\/h4>\n

Our\u00a010mg capsules<\/strong>\u00a0offer distinct advantages for laboratory workflows:<\/p>\n

    \n
  • Precise Dosing:<\/strong>\u00a0Each capsule contains exactly 10mg of active compound (\u00b12% variance)<\/li>\n
  • Oral Bioavailability:<\/strong>\u00a0Capsule form optimized for gastrointestinal absorption studies<\/li>\n
  • Stability:<\/strong>\u00a0Encapsulation protects from moisture and oxidation<\/li>\n
  • Documentation:<\/strong>\u00a0Batch-coded for complete traceability and chain of custody<\/li>\n
  • Ease of Use:<\/strong>\u00a0Simplified administration in research protocols<\/li>\n<\/ul>\n

    Research Applications<\/strong><\/h4>\n

    biosynlab MK-677 Ibutamoren Capsules serve as standardized reference materials for:<\/p>\n

      \n
    • Growth hormone secretion and pulsatility studies<\/li>\n
    • Ghrelin receptor (GHS-R1a) pharmacology<\/li>\n
    • IGF-1 axis research and somatomedin studies<\/li>\n
    • Metabolic research and energy homeostasis<\/li>\n
    • Appetite regulation and feeding behavior studies<\/li>\n
    • Bone density and osteoporosis research<\/li>\n
    • Muscle preservation and protein synthesis studies<\/li>\n
    • Sleep quality and REM sleep research<\/li>\n
    • Analytical method development (HPLC, LC-MS\/MS)<\/li>\n
    • Forensic toxicology reference standards<\/li>\n<\/ul>\n

      Researchers utilize MK-677 alongside other growth hormone secretagogues including ipamorelin, sermorelin, and GHRP-6, as well as comparative studies with exogenous growth hormone and IGF-1.<\/p>\n

      Quality Control & Analytical Verification<\/strong><\/h4>\n

      Every production batch undergoes rigorous multi-phase testing:<\/p>\n

        \n
      • HPLC Purity Analysis:<\/strong>\u00a0\u226598.5% confirmed via reverse-phase chromatography<\/li>\n
      • NMR Spectroscopy:<\/strong>\u00a0\u00b9H-NMR, \u00b9\u00b3C-NMR, and 2D-NMR structural confirmation<\/li>\n
      • Mass Spectrometry:<\/strong>\u00a0ESI-MS molecular weight verification<\/li>\n
      • Chiral Purity:<\/strong>\u00a0Enantiomeric excess confirmation (R-configuration)<\/li>\n
      • Uniformity of Dosage:<\/strong>\u00a0USP <905> compliance testing<\/li>\n
      • Dissolution Testing:<\/strong>\u00a0Characteristic release profile confirmation<\/li>\n
      • Residual Solvent Analysis:<\/strong>\u00a0GC-HS detection <100ppm total<\/li>\n
      • Heavy Metals Screening:<\/strong>\u00a0ICP-MS for Class 1 and 2 elements<\/li>\n
      • Microbial Testing:<\/strong>\u00a0USP <61> \/ <62> compliance<\/li>\n<\/ul>\n

        Certificate of Analysis (COA) and Material Safety Data Sheet (MSDS) included with each order.<\/p>\n

        Geographic Markets & Logistics<\/strong><\/h4>\n

        biosynlab<\/strong>\u00a0provides\u00a0MK-677 Ibutamoren Capsules<\/strong>\u00a0to research institutions globally:<\/p>\n

        \ud83c\uddfa\ud83c\uddf8 United States:<\/strong>\u00a03-5 day delivery to California, Texas, Florida, New York, Illinois, Washington, Colorado, Oregon, Arizona, Massachusetts, Pennsylvania, Ohio, Georgia, North Carolina, Michigan, New Jersey, Virginia, Maryland, Indiana, Tennessee, Missouri, Wisconsin, Minnesota<\/p>\n

        \ud83c\uddec\ud83c\udde7 United Kingdom:<\/strong>\u00a02-4 day express to London, Manchester, Birmingham, Glasgow, Edinburgh, Bristol, Liverpool, Leeds, Sheffield, Cardiff, Belfast, Newcastle, Nottingham, Southampton, Leicester, Coventry, Brighton<\/p>\n

        \ud83c\uddea\ud83c\uddfa European Union:<\/strong>\u00a03-6 day delivery to Amsterdam, Rotterdam, Berlin, Munich, Hamburg, Cologne, Frankfurt, Stuttgart, Paris, Lyon, Marseille, Barcelona, Madrid, Rome, Milan, Vienna, Prague, Warsaw, Budapest, Copenhagen, Stockholm, Oslo, Helsinki, Brussels, Dublin, Lisbon<\/p>\n

        \ud83c\udde8\ud83c\udded\ud83c\uddf3\ud83c\uddf4 Other Europe:<\/strong>\u00a0Switzerland, Norway<\/p>\n

        All shipments include tracking numbers, discrete plain packaging, and customs-compliant documentation.<\/p>\n

        Packaging & Presentation<\/strong><\/h4>\n
          \n
        • Primary:<\/strong>\u00a0Pharmaceutical-grade gelatin capsules (size 00)<\/li>\n
        • Secondary:<\/strong>\u00a0Amber glass pharmaceutical bottle with child-resistant cap<\/li>\n
        • Tertiary:<\/strong>\u00a0Heat-sealed mylar barrier bag with silica gel desiccant<\/li>\n
        • Outer:<\/strong>\u00a0Opaque padded mailer with no product identification<\/li>\n
        • Labeling:<\/strong>\u00a0Product code, batch number, storage conditions, QR-linked COA<\/li>\n
        • Documentation:<\/strong>\u00a0COA, MSDS, handling guidelines, storage recommendations<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

          MK-677 (Ibutamoren) Capsules: Premium Industrial Grade Growth Hormone Secretagogue   PRODUCT SPECIFICATIONS TABLE   Attribute Specification Brand biosynlab Product Name MK-677 Capsules (Ibutamoren) IUPAC Name (R)-1-(2-methylalanyl-O-(4-hydroxybutyl)-D-seryl)-1-(methylsulfonyl)-1,2-dihydrospiro[indole-3,4\u2032-piperidine] mesylate Common Names MK-677, Ibutamoren, Ibutamoren Mesylate, Nutrobal CAS Number 159634-47-6 (free base) \/ 159752-10-0 (mesylate) Molecular Formula C\u2082\u2087H\u2083\u2086N\u2084O\u2085S \u00b7 CH\u2084O\u2083S (mesylate) Molecular Weight 528.67 g\/mol (mesylate salt) Form […]<\/p>\n","protected":false},"featured_media":574,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[2236,2275,2237],"product_tag":[16818,16819,16820,16821,16822,16823,16824,16825,16826,16827,16828,16829,16830,16831,16832,16833,16834,16835,16836,16837,16838,16839,16840,16841,16842,16843,16844,16845,16846,16847,16848,16849,16850,16851,16852,16853,16854,16855,16856,16857],"class_list":["post-544","product","type-product","status-publish","has-post-thumbnail","product_cat-fat-loss-cutting","product_cat-muscle-growth-bulking","product_cat-sarms-next-lvl-muscle","product_tag-buy-mk-677-capsules-online-toronto","product_tag-mk-677-capsules-abu-dhabi-wholesale","product_tag-mk-677-capsules-amsterdam-wholesale","product_tag-mk-677-capsules-austin-supplier","product_tag-mk-677-capsules-bangkok-buy-bulk","product_tag-mk-677-capsules-berlin-buy","product_tag-mk-677-capsules-bologna-supplier","product_tag-mk-677-capsules-bulk-order-krakow","product_tag-mk-677-capsules-calgary-lab-grade","product_tag-mk-677-capsules-dubai-distributor","product_tag-mk-677-capsules-for-sale-nagoya","product_tag-mk-677-capsules-for-sale-toulouse","product_tag-mk-677-capsules-geneva-order-online","product_tag-mk-677-capsules-gothenburg-purchase","product_tag-mk-677-capsules-halifax-bulk","product_tag-mk-677-capsules-houston-bulk-research","product_tag-mk-677-capsules-in-bruges","product_tag-mk-677-capsules-klagenfurt-shipping","product_tag-mk-677-capsules-leuven-buy-online","product_tag-mk-677-capsules-limerick-research-use","product_tag-mk-677-capsules-ljubljana-research-grade","product_tag-mk-677-capsules-luxembourg-online-store","product_tag-mk-677-capsules-madrid-online","product_tag-mk-677-capsules-marseille-buy-online","product_tag-mk-677-capsules-netherlands-bulk-supplier","product_tag-mk-677-capsules-ottawa-for-labs","product_tag-mk-677-capsules-plovdiv-order","product_tag-mk-677-capsules-porto-lab-use","product_tag-mk-677-capsules-prague-bulk-distributor","product_tag-mk-677-capsules-riyadh-shipping","product_tag-mk-677-capsules-san-diego-order-online","product_tag-mk-677-capsules-seoul-distributor","product_tag-mk-677-capsules-sofia-shop","product_tag-mk-677-capsules-supplier-osaka","product_tag-mk-677-capsules-tampa-wholesale","product_tag-mk-677-capsules-tokyo-bulk","product_tag-mk-677-capsules-valencia-lab-supply","product_tag-mk-677-capsules-vancouver-for-sale","product_tag-mk-677-capsules-vienna-lab-supply","product_tag-mk-677-capsules-zurich-shop","first","instock","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"\nBuy MK-677 Capsules \u2013 Boost GH Research & Bulk Supply EU<\/title>\n<meta name=\"description\" content=\"Buy MK-677 (Ibutamoren) Capsules to support growth hormone and recovery studies. 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