Nepsilon-Acetyl-L-lysine is an R-chain N-acetylated α amino acid used together with other lysine analogues to differentiate and characterized various aminoacylases and regulator 2 (Sir2) enzymes/sirtuins.

Carbocisteine是一种粘液溶解剂，用于治疗慢性阻塞性肺疾病 (COPD) 和其他呼吸系统疾病。它帮助改善呼吸道分泌物的排除。

Methylcysteine is one of the identified number of bioactive substances in garlic that are water soluble that may exert some chemopreventive effects on chemical carcinogenesis.

O-Acetyl-L-serine hydrochloride is an endogenous metabolite.

H-Cys(Trt)-OH is a potent and selective inhibitor of mitotic kinesin Eg5 with IC50 value of 140 nM.

S-Allyl cysteine (SAC), a natural constituent of fresh garlic, has antioxidant and anticancer properties in animals.