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Identification of a new analogue of sildenafil added illegally to a functional food marketed for penile erectile dysfunction
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Simultaneous determination of synthetic phosphodiesterase-5 inhibitors found in a dietary supplement and premixed bulk powders for dietary supplements using high-performance liquid chromatography with diode array detection and liquid chromatography-electrospray ionization tandem mass spectrometry
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Structural identification of a new acetildenafil analogue from pre-mixed bulk powder intended as a dietary supplement
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Structure determination of new analogues of vardenafil and sildenafil in dietary supplements
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Determination of (R)-xanthoanthrafil, a phosphodiesterase-5 inhibitor, in a dietary supplement promoted for sexual enhancement
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