title: Reaction between molecular oxygen and photo-excited protoporphyrin IX.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D005663:Furans; D008027:Light; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010084:Oxidation-Reduction; D010100:Oxygen; D011166:Porphyrins / Q000032:analysis
chemical_list: D005663:Furans; D011166:Porphyrins; D010100:Oxygen