知识贝壳
知识贝壳
所属栏目：发酵生物技术英语
The basic structure of the penicillins is 6-aminopenicillanic acid(6-APA)made up of a thiazolidine ring fused with a β-lactam ring.The 6-amino position carries a variety of acyl substituents.In the absence of addition of side-chain precursors to the ferme ......（本文共 1481 字 , 1 张图） [阅读本文] >>