1-环丙基-6,7-二氟-8-甲氧基-1,4-二氢-4-氧代喹啉羧酸乙酯精制方法的考察

    Study of the refining method of cyclopropyl-6,7-difluoro-8-methoxy-1,4-dihydro-4-oxoquinoline-3-carboxylate

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