(2,4-Dinitrophenyl)pyridinium chloride 1-(2',4'-Dinitrophenyl)pyridinium chloride 1-(2,4-Dinitrophenyl)pyridinium chloride 4185-69-7 N-(2,4-Dinitrophenyl)pyridinium chloride NSC16029 Pyridinium, 1-(2,4-dinitrophenyl)-, chloride