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In this paper, we developed and validated a simple, sensitive, and selective high-performance liquid chromatography–tandem mass spectrometry (HPLC–MS/MS) method to identify and measure the following prohibited substances that may be found in cosmetic products: minoxidil, hydrocortisone, spironolactone, estrone, canrenone, triamcinolone acetonide and progesterone. Chromatographic separation was performed...
In this paper, a high-performance liquid chromatography coupled with ultraviolet detection and Fourier transform-ion cyclotron resonance mass spectrometry (HPLC–UV/FTICRMS) method was described for the investigation of impurity profile in moxifloxacin (MOX) drug substance and chemical reference substance. Ten impurities were detected by HPLC–UV, while eight impurities were identified by using the...
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