𝔖 Bobbio Scriptorium
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Identification of minor flavonoid impurities found in commercial rutin

✍ Scribed by William J. Dunlap; Simon H. Wender

Book ID
102624838
Publisher
Elsevier Science
Year
1961
Tongue
English
Weight
442 KB
Volume
2
Category
Article
ISSN
0003-2697

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Besides several known impurities in cimetidine, two additional compounds at levels below 0.1% were detected by ion-pair reversed-phase high-performance liquid chromatography (HPLC). The impurities were isolated from crude cimetidine using normal-phase preparative HPLC. 1H and 13C NMR and mass spectr