is conjugate base of hydroxybenzoate organosulfonate oxoanion chromoxane cyanin R(3-) 467.044 467.42600 5-[(3-carboxylato-5-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)(2-sulfonatophenyl)methyl]-2-hydroxy-3-methylbenzoate An organosulfonate oxoanion obtained by deprotonation of the sulfo and carboxy groups of 5-[(3-carboxy-5-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)(2-sulfophenyl)methyl]-2-hydroxy-3-methylbenzoic acid. C23H15O9S CC1=C\C(C=C(C([O-])=O)C1=O)=C(\c1cc(C)c(O)c(c1)C([O-])=O)c1ccccc1S([O-])(=O)=O CHEBI:87387 InChI=1S/C23H18O9S/c1-11-7-13(9-16(20(11)24)22(26)27)19(15-5-3-4-6-18(15)33(30,31)32)14-8-12(2)21(25)17(10-14)23(28)29/h3-10,24H,1-2H3,(H,26,27)(H,28,29)(H,30,31,32)/p-3/b19-14+ KXOWVZNVTQLQPD-XMHGGMMESA-K chebi_ontology chromoxane cyanin R anion chromoxane cyanin R trianion chromoxane cyanin R free acid