Synonyms: tetrasodium 2-[4-[2-(4-amino-2-sulphonatophenyl)vinyl]-3-sulphonatophenyl]-2H-naphtho[1,2-d]triazole-6,8-disulphonate;2H-Naphtho(1,2-D)triazole-6,8-disulfonic acid, 2-(4-(2-(4-amino-2-sulfophenyl)ethenyl)-3-sulfophenyl)-, sodium salt (1:4);2H-Naphtho(1,2-D)triazole-6,8-disulfonic acid, 2-(4-(2-(4-amino-2-sulfophenyl)ethenyl)-3-sulfophenyl)-, tetrasodium salt;Einecs 267-534-6;Tetrasodium 2-(4-(2-(4-amino-2-sulphonatophenyl)vinyl)-3-sulphonatophenyl)-2H-naphtho(1,2-D)triazole-6,8-disulphonate