title: Application of high-performance liquid chromatography hyphenated techniques for identification of degradation products of cefpodoxime proxetil.
abstract: Application of the HPLC hyphenated techniques of LC-MS, LC-NMR and solvent-elimination LC-IR was demonstrated by the identification of the degradation products of a third generation cephalosporin antibiotic, cefpodoxime proxetil, in solid state, drug formulation and solution. Molecular weight and fragment information were obtained by LC-MS, and detailed structural information was confirmed by LC-NMR. Information on the carboxyl functional group obtained by solvent-elimination LC-IR was useful for confirmation of the ester hydrolysis. The degradation products were successfully identified without complicated isolation or purification processes.
authors.affiliation: Analytical and Quality Evaluation Research Laboratories, Sankyo Co Ltd, 1-12-1 Shinomiya, Hiratsuka-shi, Kanagawa, Japan. fukutu@sankyo.co.jp
authors.forename: Naoto
authors.initials: N
authors.lastname: Fukutsu
authors.forename: Takao
authors.initials: T
authors.lastname: Kawasaki
authors.forename: Koichi
authors.initials: K
authors.lastname: Saito
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Nakazawa
mesh_terms: D015296:Ceftizoxime / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004355:Drug Stability; D006863:Hydrogen-Ion Concentration; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D015394:Molecular Structure; D015203:Reproducibility of Results; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods; D013055:Spectrophotometry, Infrared / Q000379:methods; D013696:Temperature; D000097627:Cefpodoxime Proxetil
chemical_list: D015296:Ceftizoxime; D000097627:Cefpodoxime Proxetil