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In order to investigate the potential links between catecholamines (CAs) and Alzheimer's disease (AD), rapid and sensitive ultra-performance liquid chromatography (UPLC)-tandem mass spectrometry (MS/MS) methods in different ionization modes for the quantification of 14 CAs and their metabolites in rat urine without derivatization or complex sample(More)
A sensitive and reliable ultra high performance liquid chromatography coupled with quadrupole-time-of-flight mass spectrometry method was established to separate and identify the chemical constituents of Kai-Xin-San prescription, a classic traditional Chinese medicine formula that plays an important role in the treatment of Alzheimer's disease. The(More)
A rapid and sensitive liquid chromatography with high-resolution mass spectrometry method with multiple data processing algorithms was developed and applied for the metabolite profiling of evodiamine and its analogous alkaloids in rat plasma after the administration of Wu-Zhu-Yu decoction. All samples were purified using hydrophilic-lipophilic balanced(More)
A rapid, improved and comprehensive method including high-performance thin-layer chromatography, fingerprint technology and single standard to determine multiple components was developed and validated for the quality evaluation of licorice. In this study, a newly developed high-performance thin-layer chromatography method was first used for authentication(More)
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