期刊
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
卷 48, 期 4, 页码 1070-1075出版社
ELSEVIER
DOI: 10.1016/j.jpba.2008.08.019
关键词
Health supplement; PDE-5 inhibitor; Adulterant; Liquid chromatography (LC); Mass spectrometry (MS); Nuclear magnetic resonance (NMR)
资金
- Academic Research Fund
A PDE-5 inhibitor was detected and isolated from a health supplement claimed to be a preparation of fresh oyster extracts and be able to promote and support healthy sexual function and endurance, etc. The structure of this PDE-5 inhibitor was elucidated using LC-UV, LC-TOF-MS, MS-MS, IR spectroscopy, and 2D NMR. It was characterized as 8-(2-(4-(hydroxymethyl)piperidin-1-yl)benzylamino)-3-ethyl-1-Himidazo[4,5-g]quinazoline-2(3H)-thione, a compound reported to be a PDE-5 inhibitor. (C) 2008 Elsevier B.V. All rights reserved.
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