1056-69-5
(4S)-2t-((R)-tert-butoxycarbonyl-phthalimido-methyl)-5,5-dimethyl-thiazolidine-4r-carboxylic acid
→
1057-37-0
(4S)-2t-[(R)-tert-butoxycarbonyl-(2-phenoxy-acetylamino)-methyl]-5,5-dimethyl-thiazolidine-4r-carboxylic acid
87-08-1
青霉素V