GHRP-6 Specs: Sequence, MW & CAS
Part of the full GHRP-6 guide - a growth-hormone-releasing peptide reference compound, identity-verified with a COA on every vial.
In brief
GHRP-6's identity is fixed by a small, well-documented set of constants: a six-residue sequence with two D-amino acids and a C-terminal amide, a molecular weight of 873.01 g/mol, the molecular formula C46H56N12O6, and CAS number 87616-84-0. These values are what catalog and reference sources use to confirm material identity and to perform concentration math.
To the molecule
Molecular specifications
His-D-Trp-Ala-Trp-D-Phe-Lys-NH2The detail
A closer look
01
Sequence and the meaning of the D-residues
The sequence is His-D-Trp-Ala-Trp-D-Phe-Lys-NH2, a synthetic hexapeptide. Two positions, D-Trp (residue 2) and D-Phe (residue 5), are in the D (non-natural) configuration. Structurally these stereocenters are the reason the molecule resists enzymatic degradation, since proteolytic enzymes are tuned to L-peptide bonds. The terminal -NH2 denotes C-terminal amidation, part of the defined chemical identity rather than a free carboxyl terminus.
02
Molecular weight and formula
The molecular weight is 873.01 g/mol (source hint: ChemicalBook) and the molecular formula is C46H56N12O6. The weight is the practical constant for the lab: it converts a measured mass of powder into molar concentration (moles = grams / 873.01), which is how stock molarity is set for receptor-signaling assays. The formula, with its twelve nitrogen atoms, reflects the histidine, two tryptophan rings, and lysine side chain present in the sequence.
03
CAS number and identity verification
CAS number 87616-84-0 (source hint: peptide.com) is the unique registry identifier for GHRP-6 and is the field used to confirm that catalog material matches the intended compound. Together with the formula and molecular weight, it forms the minimal identity triplet a researcher checks against a certificate of analysis.
04
Structure-to-function summary
Functionally, this small hexapeptide is defined as a GHS-R1a (ghrelin) receptor agonist and the prototypical, historical GHRP. The compact six-residue scaffold with two stabilizing D-residues is what lets it serve as a durable reference ligand: small enough to synthesize and characterize reproducibly, stable enough (via the D-amino acids) to behave consistently across the comparative secretagogue studies it anchors.
The fine print: products are sold for laboratory research use only and are not for human or animal consumption. Bodily introduction into humans or animals is strictly prohibited by law. GHRP-6 is not a drug and is not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the FDA.