CAS: 66924-59-2 Molecular Formula: C6H4NNaO3 . 2(H2O) Molecular Weight (g/mol): 161.09 Synonym: Sodium p-Nitrophenolate Dihydrate,4-Nitro-phenol Sodium Salt Dihydrate IUPAC Name: sodium;4-nitrophenolate;dihydrate SMILES: O.O.[Na+].[O-]c1ccc(cc1)[N+](=O)[O-]