dioxygen reactive oxygen species singlet dioxygen InChI=1S/O2/c1-2 Gmelin:491 Reaxys:3587218 A reactive oxygen species that is the lowest excited state of the dioxygen molecule. (1)O2 0 31.98983 CHEBI:26689 MYMOFIZGZYHOMD-UHFFFAOYSA-N PMID:18264592 Drug_Central:4235 chebi_ontology 31.99880 PMID:21735018 Reaxys:16514885 O2 Wikipedia:Singlet_oxygen O=O singlet molecular oxygen PMID:21883246