Melanocortin and Pigmentation Research

This category covers peptides studied in the context of the melanocortin receptor family (MC1R through MC5R) and copper-complexed tripeptides characterized in dermal and extracellular-matrix research. Melanocortin-family compounds include Melanotan II, a cyclic lactam analog of alpha-MSH investigated as a nonselective melanocortin receptor agonist across preclinical binding studies. Copper-peptide compounds include GHK-Cu, a naturally occurring copper-binding tripeptide first isolated from human plasma and extensively characterized in the literature on collagen gene expression and matrix remodeling. Copper-complexed peptides require particular analytical attention because the copper coordination state affects both stability and identity confirmation. Each GHK-Cu lot is verified for identity by mass spectrometry with results published on the batch COA. All products in this category are supplied strictly for laboratory research use. They are not drugs, not dietary supplements, and are not for human or veterinary use.