N-(2-氰基乙基)-L-缬氨酸

2-(1,3-dihydroxyinden-2-ylidene)propanedinitrile

(S)-2-{[Cyano-(1,3-dioxo-indan-2-ylidene)-methyl]-amino}-3-methyl-butyric acid

(2R)-A-[(1,3-二氢-1,3-二氧代-2H-异吲哚-2-基)氧基]-丁酸-1,1-二甲基乙酯

2-Methyl-2-propanyl (2S)-2-acetoxy-3-methylbutanoate