is conjugate base of kaempferol kaempferol oxoanion 285.22840 5,7-dihydroxy-2-(4-hydroxyphenyl)-4-oxo-4H-chromen-3-olate C15H9O6 CHEBI:58573 IYRMWMYZSQPJKC-UHFFFAOYSA-M InChI=1S/C15H10O6/c16-8-3-1-7(2-4-8)15-14(20)13(19)12-10(18)5-9(17)6-11(12)21-15/h1-6,16-18,20H/p-1 Oc1ccc(cc1)-c1oc2cc(O)cc(O)c2c(=O)c1[O-] The 3-oxoanion of kaempferol. chebi_ontology kaempferol flavonol oxoanion