Xi Zhao

Ultra-high-performance liquid chromatography-quadrupole-orbitrap-tandem mass spectrometry identifies 24 “unexpected” compounds to construct a one-for-one anti -counterfeiting quality markers system of Lianhua Qingwen capsule

Abstract The study completed the quantification of 110 compounds from Lianhua Qingwen ( LHQW ) capsule using library-aided ultra-high-performance liquid chromatography-quadrupole-orbitrap-tandem mass spectrometry under three adducting models ([M − H] - , [M + HCOO] - , and [M + H...