Peptide is a collective term for two or more peptide-bonded amino acids, and a peptide is called oligopeptide or polypeptide, depending on its chain length. There is no clear definition to distinguish between peptides and proteins, but a peptide consisting of 100 or more amino acids linked to each other is called a protein. An organism uses peptides as bioactive substances, and peptides play important roles as hormones, transmitters, etc. in vivo. Moreover, since peptides are relatively easy to be synthesized and have a strong physiological action, they have been actively studied for use as pharmaceuticals.
FUJIFILM Wako has a lineup of various peptides such as bioactive peptides.