CGGRGD is a RGD derivative with cysteine as the n-terminal. CGGRGD was synthesized by solid phase peptide synthesis technology, and amino2-cyanobenzothiazole (2-cyanobenzothiazole) (2-cyanobenzothiazole (CBT) was added on the surface of PCL fiber for ammoniation.

β-Amyloid (40-1) is a biological active peptide. (non-toxic reverse fragment Aβ(40–1)

O-Acetylserine (O-Acetyl-L-serine) is an intermediate in the biosynthesis of the amino acid cysteine in bacteria and plants.