3-((S)-3-{(S)-2-[(S)-2-((2S,3S)-2-Amino-3-methyl-pentanoylamino)-4-carbamoyl-butyrylamino]-3-carbamoyl-propionylamino}-4-{(S)-2-[(S)-1-(carbamoylmethyl-carbamoyl)-3-methyl-butylcarbamoyl]-pyrrolidin-1-yl}-4-oxo-butylsulfanyl)-propionic acid
(S)-3-(4-Dimethylamino-phenyl)-2-(2-nitro-phenylsulfanylamino)-propionic acid
(S)-3-(4-Dimethylamino-phenyl)-2-(2-nitro-phenylsulfanylamino)-propionic acid 2,4,5-trichloro-phenyl ester
p-Dimethylamino-L-phenylalanin
bis(p-nitrophenyl)sulfite