[Analysis of mixed drugs by mass spectrometry. IV. Analysis of opium alkaloids. (2). Influence of ionizing potential on the mass spectra of codeine, dihydrocodeine, and papaverine].
D003061:Codeine; D009020:Morphine; D010208:Papaverine; D013057:Spectrum Analysis
D009020:Morphine; D010208:Papaverine; D003061:Codeine