1,7-Naphthalenedisulfonic acid, 4-(acetylamino)-5-hydroxy- 4-(Acetylamino)-5-hydroxy-1,7-naphthalenedisulfonic acid 4-(Acetylamino)-5-hydroxynaphthalene-1,7-disulphonic acid 6409-21-8 EINECS 229-080-7