OBJECTIVE : To establish a sensitive method for the determination of roxithromycin ( E Rox ) and its active metabolite ,( 9Z ) epimeric isomer ( Z Rox ) .
目的：建立灵敏专一的分析方法，测定人尿样中的罗红霉素（E－Rox）及其活性代谢产物Z－Rox。
9z