title: Structural identification of trace level enol tautomer impurity by on-line hydrogen/deuterium exchange HR-LC/MS in a LTQ-Orbitrap hybrid mass spectrometer.
authors.forename: Guodong
authors.initials: G
authors.lastname: Chen
authors.forename: Anatoliy
authors.initials: A
authors.lastname: Khusid
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Daaro
authors.forename: Patrick
authors.initials: P
authors.lastname: Irish
authors.forename: Birendra N
authors.initials: BN
authors.lastname: Pramanik
mesh_terms: D002138:Calibration; D002851:Chromatography, High Pressure Liquid; D003903:Deuterium / Q000737:chemistry; D004340:Drug Contamination; D006859:Hydrogen / Q000737:chemistry; D013058:Mass Spectrometry; D009862:Online Systems; D004364:Pharmaceutical Preparations / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D004364:Pharmaceutical Preparations; D006859:Hydrogen; D003903:Deuterium