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A Modified (1)H-NMR Quantification Method of Ephedrine Alkaloids in Ephedrae Herba Samples
A previous (1)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 of ephedrine alkaloids...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10378770/ https://www.ncbi.nlm.nih.gov/pubmed/37511036 http://dx.doi.org/10.3390/ijms241411272 |