Studies on IR fingerprint of tongren dahuoluo pills and tongren niuhuangqingxin pills / 中国中药杂志

<p><b>OBJECTIVE</b>To identify Tongren Dahuoluo pills and Tongren Niuhuangqingxin pills respectively by analysis of IR fingerprint.</p><p><b>METHOD</b>Both drugs were extracted with hexane, ethylether and butanone respectively and then the obtained extracts were measured with the ET-IR spectrometer.</p><p><b>RESULT</b>By analyzing IR fingerprint of 25 batches of Tongren Dahuoluo pills and 27 batches of Tongren Niuhuangqingxin pills, we found that different batches of the same drug hadstabile and repeatable fingerprint.</p><p><b>CONCLUSION</b>By using IR fingerprint, either Tongren Dahuoluo pills or Tongren Niuhuangqingxin pills can be exactly identified. It provides a rapid method for drug identification and quality control.</p>