(H-GLY-CYS-OH)2

N,N'-L-cystyl-bis-(N-glycyl-glycine )

(H-CYS-GLY-OH)2

N-[2-[(2-氨基-2-氧代乙基)氨基]-2-羧基乙基]-L-天冬氨酸

D-半胱氨酸