Z-Ala-O-hexafluorisopropyl

(N-Carbobenzoxy-glycyl)-L-cystein

2-amino-3-(ethyldisulfanyl)propanoic acid

S-(E-1,2-二氯乙烯基)-L-半胱氨酸

2-氨基-3-[2-(2-氨基-2-羧基-乙基)硫基乙基硫基]丙酸