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本文提出以对二甲氨基苯甲醛为显色剂测定复方新诺明片中ＳＭＺ的含量，方法简便、灵敏．
In this paper, p-dimethylaminobenzaldehyde was used as the reagent to determine the content of SMZ in the compound cotrimoxazole tablets. The method is simple and sensitive.