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Sodium Tanshinone IIA Sulfonate (STS) is a water-soluble derivative of tanshinone IIA, an important lipophilic component isolated from the roots of Salvia miltiorrhiza. STS, as injection drug, is widely and successfully used in China for treating cardiovascular disease. Eight impurities were detected in STS bulk drug by LC-UV and LC–ESI-MS n . Low pressure C 18 column chromatography...
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