CAS: 85-85-8 Molecular Formula: C15H11N3O Molecular Weight (g/mol): 249.273 InChI Key: RAXUMGMWXZYADR-OBGWFSINSA-N Synonym: 1-2-pyridylazo-2-naphthol,unii-095b53y3xv,pan indicator,2-naphthalenol, 1-2-pyridinylazo,1e-1-pyridin-2-ylhydrazinylidene naphthalen-2-one,1-2-pyridylazo-2-hydroxynaphthalene,pan van,1-2-pyridyldiazenyl naphthalen-2-ol,1-pyridin-2-azo-2-naphthol,2-naphthalenol, 1-2-2-pyridinyl diazenyl PubChem CID: 5376264 IUPAC Name: (1E)-1-(pyridin-2-ylhydrazinylidene)naphthalen-2-one SMILES: C1=CC=C2C(=C1)C=CC(=O)C2=NNC3=CC=CC=N3