2-(4-nitrophenyl)isoquinolin-2-ium-4-olate;2-(4-nitrophenyl)-4-isoquinolin-2-iumolate;56359-31-0;Isoquinolinium, 4-hydroxy-2-(4-nitrophenyl)hydroxide, inner salt
2-(4-nitrophenyl)isoquinolin-2-ium-4-olate