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Identification, synthesis and quantification of process-related impurities in auraptene

✍ Scribed by Yan-Gang Li; Hai-Fang Chen; Ming-Zhu Tu; Pu-Zhao Zhang; Xiao-Yun Wang; Jin-Bin Yuan; Wu-Liang Yang

Book ID
108189908
Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
984 KB
Volume
56
Category
Article
ISSN
0731-7085

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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