3.
Name: (2R,3R)-2,3-dihydroxybutanedioic acid; [3-(2-methyl-3-phenyl-3-propanoyloxy-pyrrolidin-1-yl)-1-phenyl-propyl] propanoate
CAS: 69552-13-2



4.
Name: (2S)-2-amino-4-[[(1R)-1-(carboxymethylcarbamoyl)-2-[2-(4-methylaminophenyl)diazenylphenyl]sulfanyl-ethyl]carbamoyl]butanoic acid
CAS: 71259-47-7


