Electron-impact mass spectrometry of porphyrin systems.
D003300:Copper; D004355:Drug Stability; D004583:Electrons; D007501:Iron; D008274:Magnesium; D013058:Mass Spectrometry; D008433:Mathematics; D008968:Molecular Conformation; D009532:Nickel; D009942:Organometallic Compounds; D011166:Porphyrins / Q000032:analysis*; D013696:Temperature
D009942:Organometallic Compounds; D011166:Porphyrins; D003300:Copper; D009532:Nickel; D007501:Iron; D008274:Magnesium