R " is a replaceable function, e. g. acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.
是取化,如乙、及它们的环和烷同系物卤。
R " is a replaceable function, e. g. acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.
是取化,如乙、及它们的环和烷同系物卤。
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