title: Identification of IY81149 and its metabolites in the rat plasma using the on-line HPLC/ESI mass spectrometry.
abstract: Reversed-phase high-performance liquid chromatography/mass spectrometry (HPLC/MS) with an electrospray ionization (ESI) interface was applied to the identification of metabolites of IY 81149 in the rat plasma. Fragments obtained using collision-induced dissociation (CID) in both positive and negative modes were utilized to elucidate the structure of metabolites. The eluent from the conventional HPLC column was split and directly introduced into an ESI-mass spectrometer for the identification of the structures. The CID technique allowed the sensitive identification of sulfonyl-IY81149 and hydroxy-IY81149 from the rat plasma.
authors.affiliation: Bioanalysis and Biotransformation Research Center, Korea Institute of Science and Technology, Seoul, Korea. swmyung@kist.re.kr
authors.forename: S W
authors.initials: SW
authors.lastname: Myung
authors.forename: H K
authors.initials: HK
authors.lastname: Min
authors.forename: C
authors.initials: C
authors.lastname: Jin
authors.forename: M
authors.initials: M
authors.lastname: Kim
authors.forename: S M
authors.initials: SM
authors.lastname: Lee
authors.forename: G J
authors.initials: GJ
authors.lastname: Chung
authors.forename: S J
authors.initials: SJ
authors.lastname: Park
authors.forename: D Y
authors.initials: DY
authors.lastname: Kim
authors.forename: H W
authors.initials: HW
authors.lastname: Cho
mesh_terms: D053799:2-Pyridinylmethylsulfinylbenzimidazoles; D000818:Animals; D000897:Anti-Ulcer Agents / Q000097:blood*; D001562:Benzimidazoles / Q000097:blood*; D002851:Chromatography, High Pressure Liquid; D004791:Enzyme Inhibitors / Q000097:blood*; D008297:Male; D013058:Mass Spectrometry; D054328:Proton Pump Inhibitors; D051381:Rats; D017207:Rats, Sprague-Dawley; D013454:Sulfoxides / Q000097:blood*
chemical_list: D053799:2-Pyridinylmethylsulfinylbenzimidazoles; D000897:Anti-Ulcer Agents; D001562:Benzimidazoles; D004791:Enzyme Inhibitors; D054328:Proton Pump Inhibitors; D013454:Sulfoxides; C119615:ilaprazole