2-[(2,5-dimethyl-[1,3]oxazolo[5,4-d]pyrimidin-7-yl)amino]acetic acid

海因

(5-硝基-1,3-二氧代-1,3-二氢-2H-异吲哚-2-基)乙酸

(5E)-2-Mercapto-5-(4-methoxybenzylidene)-3-phenyl-3,5-dihydro-4H-imidazol-4-one

(2S,3R)-2-氨基-3-羟基-己酸