biphenyls 4-Nitrobiphenyl 4-Nitro-1,1'-biphenyl C12H9NO2 chebi_ontology CHEBI:82504 199.06333 KEGG:C19473 CAS:92-93-3 199.20540 [O-][N+](=O)c1ccc(cc1)-c1ccccc1 InChI=1S/C12H9NO2/c14-13(15)12-8-6-11(7-9-12)10-4-2-1-3-5-10/h1-9H BAJQRLZAPXASRD-UHFFFAOYSA-N 0