title: Ionization of penem beta-lactam antibiotics using thermospray (filament-on) mass spectrometry.
authors.affiliation: Research Division, Schering-Plough Corp., Bloomfield, New Jersey 07003.
authors.forename: P R
authors.initials: PR
authors.lastname: Das
authors.forename: B N
authors.initials: BN
authors.lastname: Pramanik
authors.forename: V M
authors.initials: VM
authors.lastname: Girijavallabhan
authors.forename: A K
authors.initials: AK
authors.lastname: Ganguly
mesh_terms: D000643:Ammonium Chloride; D000900:Anti-Bacterial Agents / Q000032:analysis*; D013058:Mass Spectrometry / Q000379:methods*; D047090:beta-Lactams
chemical_list: D000900:Anti-Bacterial Agents; D047090:beta-Lactams; D000643:Ammonium Chloride