enfenamic acid 241.110 241.286 C(O)(=O)C1=C(NCCC2=CC=CC=C2)C=CC=C1 C15H15NO2 CAS:23049-93-6 CHEBI:134983 Drug_Central:3176 HLNLBEFKHHCAMV-UHFFFAOYSA-N InChI=1S/C15H15NO2/c17-15(18)13-8-4-5-9-14(13)16-11-10-12-6-2-1-3-7-12/h1-9,16H,10-11H2,(H,17,18) chebi_ontology tromaril aminobenzoic acid