A Modified <sup>1</sup>H-NMR Quantification Method of Ephedrine Alkaloids in Ephedrae Herba Samples

A Modified <sup>1</sup>H-NMR Quantification Method of Ephedrine Alkaloids in Ephedrae Herba Samples

A previous <sup>1</sup>H-NMR method allowed the quantification of ephedrine alkaloids; however, there were some disadvantages. The cyclized derivatives resulted from the impurities of diethyl ether were identified and benzene was selected as the better extraction solvent. The locations o...

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Bibliographic Details
Main Authors: Yue-Chiun Li, Chia-Hung Wu, Thi Ha Le, Qingjun Yuan, Luqi Huang, Guo-Fen Chen, Mei-Lin Yang, Sio-Hong Lam, Hsin-Yi Hung, Handong Sun, Yi-Hung Wu, Ping-Chung Kuo, Tian-Shung Wu
Format: Article
Language:English
Published: MDPI AG 2023-07-01
Series:International Journal of Molecular Sciences
Subjects:
ephedrine alkaloid
Ephedrae Herba
cyclized derivative
quantitative nuclear magnetic resonance spectroscopy (qNMR)
two-dimensional NMR (2D NMR)
Online Access:https://www.mdpi.com/1422-0067/24/14/11272

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https://www.mdpi.com/1422-0067/24/14/11272

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