Title: Isolation and characterization of propoxyphenyl linked sildenafil and thiosildenafil analogues in health supplements.
Journal: Journal of pharmaceutical and biomedical analysis 20121101
Title: Identification of a novel sildenafil analogue in an adulterated herbal supplement.
Journal: Journal of pharmaceutical and biomedical analysis 20120205
Title: Identification of thioketone analogues of sildenfil using gas chromatography-mass spectrometry.
Journal: Journal of chromatography. A 20110928
Title: Identification of thiosildenafil in a health supplement.
Journal: Natural product communications 20110701
Title: Direct intramolecular gas-phase transfer reactions during fragmentation of sildenafil and thiosildenafil analogs in electrospray ionization mass spectrometry.
Journal: Rapid communications in mass spectrometry : RCM 20090301
Title: Structure elucidation of thioketone analogues of sildenafil detected as adulterants in herbal aphrodisiacs.
Journal: Journal of pharmaceutical and biomedical analysis 20090115