phenols phenolphthalein Phenolphthalein Drug_Central:2135 3,3-Bis(4-hydroxyphenyl)phthalide phthalin chebi_ontology KEGG:D05456 CHEBI:34914 KEGG:C14286 KJFMBFZCATUALV-UHFFFAOYSA-N 318.324 InChI=1S/C20H14O4/c21-15-9-5-13(6-10-15)20(14-7-11-16(22)12-8-14)18-4-2-1-3-17(18)19(23)24-20/h1-12,21-22H 0 C20H14O4 CAS:77-09-8 Oc1ccc(cc1)C1(OC(=O)c2ccccc12)c1ccc(O)cc1 euchessina 318.08921 phthalimetten LINCS:LSM-2432 2-benzofuran-1(3H)-one