2,7-NAPHTHALENEDISULFONIC ACID, 4-(4,6-DICHLORO-s-TRIAZIN-2-YLAMINO)-5-HYDROXY-6 2,7-Naphthalenedisulfonic acid, 4-(4,6-dichloro-s-triazin-2-ylamino)-5-hydroxy-6-(2-hydroxy-5-nitrophenylazo)- 73826-58-1 CERN ostazinova H-N [Czech]