Hexarelin

Hexarelin in Canada is supplied by Horizon Peptides as a lyophilized powder in sealed 5 mg research vials, available singly or in 3-vial and 10-vial packs. Hexarelin is a synthetic hexapeptide studied in ghrelin receptor signalling models.

Hexarelin shares its six-residue framework with GHRP-6 but differs at one position, carrying a methylated tryptophan in place of the plain residue, and terminating in an amide group. Its molecular weight is 887.0.

Those two small changes are the whole point of the molecule. Methylating a single side chain and capping the terminus are among the most common tools in peptide chemistry for adjusting how tightly a sequence binds and how long it survives an assay, and hexarelin is a textbook illustration of both applied at once.

Because its relative differs by so little, the two are often run together as a matched pair. Any difference in observed behaviour can be attributed to the modifications rather than to the underlying framework, which is a cleaner comparison than most analogue pairs allow.

The natural pairing for this sequence is GHRP-6, which differs from it at a single residue. Beyond that pair, the catalogue carries Ipamorelin as a more selective member of the same family.