PT-141(Bremelanotide)

PT-141 in Canada is supplied by Horizon Peptides as a lyophilized powder in sealed 10 mg research vials, available singly or in 3-vial and 10-vial packs. PT-141, also catalogued as bremelanotide, is a cyclic melanocortin analogue studied for receptor subtype selectivity.

PT-141 belongs to the same cyclic melanocortin family as MT-2 and is catalogued here with matching formula and mass figures. In the wider literature it is described as a metabolite-derived analogue, and it is studied chiefly for how its receptor preferences differ from the broader-binding compound it derives from.

Selectivity is the whole research question around it. Where a compound binding several receptor subtypes at once produces results that are hard to attribute, a more selective analogue allows one subtype’s contribution to be isolated.

That makes the two a natural comparison pair in receptor panels, and PT-141 is most often studied alongside rather than instead of its relative.