sodium 5-[(dimethylamino)sulphonyl]-2-[1-ethyl-3-(2-methoxy-4-nitrophenyl)triazen-2-yl]benzoate

5-[(Dimethylamino)sulfonyl]-2-[1-ethyl-3-(2-methoxy-4-nitrophenyl)-2-triazeno]benzoic acid sodium salt