1-Pyrrolidinecarboxylic acid, 2-[(dimethylamino)carbonyl]-4-mercapto-, (4-nitrophenyl)methyl ester, (2S,4S)-
1-Pyrrolidinecarboxylic acid, 2-[(dimethylamino)carbonyl]-4-mercapto-, (4-nitrophenyl)methyl ester, (2S-cis)-
(4-Nitrophenyl)methyl (2S,4S)-2-[(dimethylamino)carbonyl]-4-mercapto-1-pyrrolidinecarboxylate
(2S,4S)-2-Dimethylaminocarbonyl-4-mercapto-1-(p-nitrobenzyloxycarbonyl)-pyrrolidine
(2S,4S)-N,N-Dimethyl-1-(4-nitrobenzyloxycarbonyl)-4-mercaptopyrrolidine-2-carboxamide