Four molecules, carefully described.
For each peptide: origin and structure, what makes it special in research, what the literature says and how robust it is. Plus the analytics of the current batch.
BPC-157
Stable gastric pentadecapeptide
A 15-amino-acid fragment of a gastric juice protein that has been studied unusually broadly in animal models. One of the most discussed research peptides, with an evidence base that is almost entirely preclinical.
TB-500
Synthetic fragment of thymosin β4
A short, N-terminally acetylated heptapeptide corresponding to the actin-binding region of thymosin β4. In cell biology, a tool for studying cell migration and the cytoskeleton.
GHK-Cu
Copper tripeptide from human plasma
A naturally occurring tripeptide that binds copper(II) and whose plasma concentration declines with age. Studied in cell culture and animal models since the 1970s, particularly well documented in skin research.
Semaglutide
Long-acting GLP-1 analogue
A deliberately modified analogue of the gut hormone GLP-1 whose half-life was extended from minutes to about a week. As the active ingredient of approved medicines one of the best-studied peptides of all; as a research chemical, a model for peptide engineering.