发明授权
EP0244637B1 Starting compounds for 7-acylamino-3-vinylcephalosporanic acid derivatives and processes for their preparation 失效
7-乙酰氨基-3-乙酰胆碱磷酸衍生物的起始化合物及其制备方法

Starting compounds for 7-acylamino-3-vinylcephalosporanic acid derivatives and processes for their preparation
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