title: Screening of synthetic phosphodiesterase-5 inhibitors in herbal dietary supplements using transmission-mode desorption electrospray and high-resolution mass spectrometry.
authors.affiliation: Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic.
authors.forename: Petr
authors.initials: P
authors.lastname: Fryčák
authors.affiliation: Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic.
authors.forename: Lucie
authors.initials: L
authors.lastname: Hartmanová
authors.affiliation: Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic.
authors.forename: Iveta
authors.initials: I
authors.lastname: Lorencová
authors.affiliation: Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic.
authors.forename: Karel
authors.initials: K
authors.lastname: Lemr
mesh_terms: D002851:Chromatography, High Pressure Liquid; D054706:Cyclic Nucleotide Phosphodiesterases, Type 5; D019587:Dietary Supplements; D013058:Mass Spectrometry; D058986:Phosphodiesterase 5 Inhibitors; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D058986:Phosphodiesterase 5 Inhibitors; D054706:Cyclic Nucleotide Phosphodiesterases, Type 5
keywords: adulteration; dietary supplements; phosphodiesterase-5 inhibitors; tandem mass spectrometry; transmission-mode desorption electrospray ionization; ultrahigh performance liquid chromatography