R " is a replaceable function, e. g. acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.
是取化基,如乙氧基、甲氧基及环氧和烷氧同系物卤基。
R " is a replaceable function, e. g. acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.
是取化基,如乙氧基、甲氧基及环氧和烷氧同系物卤基。
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