Description
Research use only
Fragment 176-191—also referred to as HGH (176-191)—is a peptide composed of the final 16 amino acids of human growth hormone (hGH), often modified with a tyrosine substitution at the N-terminus for enhanced stability. In animal studies, it has demonstrated selective fat-burning activity through the activation of beta-3 adrenergic receptors, increased cellular lipolysis, and the possible induction of thermogenesis, all without eliciting the broader endocrine effects typically associated with full-length hGH.
Supplied as a lyophilized (freeze-dried) formulation, available in vial sizes such as 5 mg. For short-term storage, room temperature is acceptable, provided the container is protected from light. For long-term preservation, store at –20 °C in a cool, dry place. To prepare, reconstitute with sterile buffer or bacteriostatic water, aliquot, and store at –20 °C, minimizing freeze–thaw cycles.
For laboratory research use only. Products are not for human consumption. Atomix Research is a chemical supplier and not a compounding pharmacy. All products are sold for research, laboratory, or analytical purposes only. You must be over 21 to purchase from this site.
| Synonyms | Fragment 176-191, HGH (176-191), Somatotropin (176-191) |
| Sequence | Tyr-Leu-Arg-Ile-Val-Gln-Cys-Arg-Ser-Val-Glu-Gly-Ser-Cys-Gly-Phe |
| Molecular Formula | C₇₈H₁₂₃N₂₃O₂₂S₂ (commonly reported); alternative reports include C₇₈H₁₂₃N₂₃O₂₃S₂ |
| Molecular Weight | Approximately 1,799.1 g/mol; alternate reports list ~1,812–1,815 g/mol |
| CAS Number | 66004-57-7 |
| Appearance | White lyophilized powder |




