摘要

Introduction: A rapid and simple UPLC-MS/MS method was established and validated for simultaneous determination of aloe-emodin, rhein, emodin, chrysophanol and physcion in rat plasma. Materials and methods: After sample preparation by a simple protein precipitation, the mass detection was conducted in multiple reaction monitoring using an API 6500 triple quadruple in negative-ion mode with an electrospray ionization interface. Gradient elution was performed with a mobile phase composed of acetonitrile and water containing 0.1% formic acid at a flow rate of 0.6 mL/min. Results: The retention time of emodin, aloe-emodin, chrysophanol, physcion, rhein and IS was at 1.54, 1.04, 1.67, 1.69, 1.09 and 1.59 min, respectively. Conclusion: This method exhibited acceptable precision, accuracy, recoveries, matrix effect and carry-over effect, which was superior to previous methods in analysis time and sample throughput.

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