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用薄层层析法作复方新诺明片的鉴别时,需取SMZ 及TMP 二种对照品按5∶1的比例溶于一定量的甲醇中使成2.4%浓度的对照溶液。配制此溶液
When using thin-layer chromatography for the identification of cotrimoxazole tablets, take two samples of SMZ and TMP reference substance in a ratio of 5: 1 and dissolve them in a certain amount of methanol to make a control solution with a concentration of 2.4%. Prepare this solution