A method for determining residual isopropylamine in metoprolol succinate
A technology of metoprolol succinate and isopropylamine, applied in the field of medicine and chemical industry, can solve problems such as poor precision and accuracy
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[0017] The method for measuring residual isopropylamine in the metoprolol succinate crude drug provided by the invention comprises:
[0018] a) Take the isopropylamine reference substance to be prepared into a reference substance solution, and inject 100 μl of it into an ion chromatograph, detect and record the peak area of the chromatographic response;
[0019] b) Take the metoprolol succinate sample to be prepared into the test solution, and inject 100 μl of it into the ion chromatograph, detect and record the peak area of the chromatographic response;
[0020] c) adopt external standard method to calculate the residual amount of isopropylamine in the metoprolol succinate sample;
[0021] Wherein the method is determined in an ion chromatograph using a cation exchange column and equipped with a conductivity detector.
[0022] The method of the present invention uses a cation-exchange chromatographic column for separation. The filler of the cation-exchange chromatographi...
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