orobol orobol orobol is one of several known isoflavones. it can be isolated from aspergillus niger or streptomyces neyagawaensis. it is a potent inhibitor of phosphoinositide 3-kinase. orobol names iupac name 3′,4′,5,7-tetrahydroxyisoflavone systematic iupac name 3-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4h-1-benzopyran-4-one other names isoluteolinsantol5,7,3',4'-tetrahydroxyisoflavone identifiers cas number 480-23-9 y 3d model (jsmol) interactive image beilstein reference 292790 chebi chebi:69437 n chemspider 4445113 n mesh d011794 pubchem cid 5281801 unii lu8uzm1t51 y comptox dashboard (epa) dtxsid20197380 inchi inchi=1s/c15h10o6/c16-8-4-12(19)14-13(5-8)21-6-9(15(14)20)7-1-2-10(17)11(18)3-7/h1-6,16-19h nkey: ioyhcqbyqjqbsk-uhfffaoysa-n ninchi=1/c15h10o6/c16-8-4-12(19)14-13(5-8)21-6-9(15(14)20)7-1-2-10(17)11(18)3-7/h1-6,16-19hkey: ioyhcqbyqjqbsk-uhfffaoyar smiles c1=cc(=c(c=c1c2=coc3=cc(=cc(=c3c2=o)o)o)o)o properties chemical formula c15h10o6 molar mass 286.23 g/mol except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). n verify (what is yn ?) infobox references