is conjugate base of formononetin flavonoid oxoanion formononetin(1-) 267.25670 3-(4-methoxyphenyl)-4-oxo-4H-chromen-7-olate A flavonoid oxoanion that is the conjugate base of formononetin, obtained by deprotonation of the 7-hydroxy group. Major microspecies at pH 7.3 (according to Marvin v 6.2.0.). C16H11O4 CHEBI:77688 COc1ccc(cc1)-c1coc2cc([O-])ccc2c1=O HKQYGTCOTHHOMP-UHFFFAOYSA-M InChI=1S/C16H12O4/c1-19-12-5-2-10(3-6-12)14-9-20-15-8-11(17)4-7-13(15)16(14)18/h2-9,17H,1H3/p-1 chebi_ontology formononetin