phenylhydrazines N-Nitrosodiphenylamine O=NN(c1ccccc1)c1ccccc1 N-Nitrosodiphenylamine UBUCNCOMADRQHX-UHFFFAOYSA-N 198.07931 C12H10N2O CAS:86-30-6 0 198.221 InChI=1S/C12H10N2O/c15-13-14(11-7-3-1-4-8-11)12-9-5-2-6-10-12/h1-10H KEGG:C14742 chebi_ontology CHEBI:34875