catechol oxidase activity https://github.com/geneontology/go-ontology/issues/21024 https://github.com/geneontology/go-ontology/issues/25794 https://github.com/geneontology/go-ontology/issues/30193 GO:0004097 o-diphenolase activity catecholase polyphenol oxidase activity Catalysis of the reaction: 2 catechol + O2 = 2 1,2-benzoquinone + 2 H2O. This reaction catalyzes exclusively the oxidation of catechols (i.e., o-diphenols) to the corresponding o-quinones. EC:1.10.3.1 Reactome:R-HSA-5662692 L-DOPA monooxygenase activity GO:0102316 diphenol oxidase activity Reactome:R-HSA-8878581 phenolase activity Reactome:R-HSA-5662662 molecular_function GO:0004097 describes oxidation of catechols (i.e., o-diphenols) to the corresponding o-quinones. For monooxygenation of monophenols, consider instead the term 'monophenol monooxygenase activity ; GO:0004503'. RHEA:21632 GO:0036263 GO:0036264 MetaCyc:RXN-13061 Reactome:R-HSA-5663050 dopamine monooxygenase activity pyrocatechol oxidase MetaCyc:CATECHOL-OXIDASE-RXN tyrosinase activity o-diphenol oxidoreductase L-dopa oxidase activity monooxygenase activity oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor