oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen 2-hydroxyisoflavanone synthase activity https://github.com/geneontology/go-ontology/issues/23415 https://github.com/geneontology/go-ontology/issues/28526 MetaCyc:RXN-7750 RHEA:35487 MetaCyc:RXN-3283 GO:0033770 GO:0102668 isoflavonoid synthase MetaCyc:RXN-1541 Catalysis of the reactions: liquiritigenin + O2 + [reduced NADPH--hemoprotein reductase] = 2,4',7-trihydroxyisoflavanone + H2O + [oxidized NADPH--hemoprotein reductase] and (2S)-naringenin + O2 + [reduced NADPH--hemoprotein reductase] = 2,4',5,7-tetrahydroxyisoflavanone + H2O + [oxidized NADPH--hemoprotein reductase]. EC:1.14.14.87 GO:0102604 molecular_function RHEA:31723