For laboratory research use only. Not for human or veterinary use. Must be 21+.
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MK-677 (Ibutamoren)

$29$5.80/mg
  • Form: lyophilized (freeze-dried) powder, sealed vial
  • Certificate of analysis: manufacturer COA for every batch, posted before shipping — see certificates
  • Shipping: pre-orders ship by October 10 from the USA · free over $150
  • Payment: Cash App, PayPal, Venmo, Coinbase or Bitcoin — how it works

For laboratory research use only. Not for human or veterinary use.

Compound identity

CompoundFormulaMol. weightCASPubChem
MK-677 (Ibutamoren) C27H36N4O5S 528.7 g/mol 159634-47-6 CID 178024

Reference identity data from PubChem where listed. Each batch's purity data is on its certificate of analysis on the lab results page.

Selected published research

Peer-reviewed papers indexed in PubMed on MK-677 (Ibutamoren):

  1. Hepatotoxicity induced by MK-677. BMJ Case Rep, 2025. PubMed 40675653
  2. LGD-4033 and MK-677 use impacts body composition, circulating biomarkers, and skeletal muscle androgenic hormone and receptor content: A case report. Exp Physiol, 2022. PubMed 36303408
  3. Effect of the Orally Active Growth Hormone Secretagogue MK-677 on Somatic Growth in Rats. Yonsei Med J, 2018. PubMed 30450851

Also searched as: Ibutamoren.

Storage

Store sealed vials cold, dry and away from light. Lyophilized peptides are typically kept at −20 °C for long-term storage.

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