2,5-Bis(2-methoxysulfophenyl)thiazolo(5,4-d)thiazole 66182-97-6 Benzenesulfonic acid, thiazolo(5,4-d)thiazole-2,5-diylbis(methoxy- EINECS 266-224-8 Thiazolo(5,4-d)thiazole-2,5-diylbis(methoxybenzenesulphonic) acid