CAS:135-53-5 MF:C10H7NaO5S MW:262.21 EINECS:205-198-4 Cyfystyron:2-Naphthalenesulfonicacid, 6,7-dihydroxy-, monosodiwmhalen; 6,7-dihydroxy-2-naphthalenesulfonicacimonosodiumsalt; 6,7-DIHYDROXY-2-HALEN SODIWM ASID NAPHTHALENESULFONIC; HALEN MONOSODIWM ASID 2,3-DIHYDROXYNAPHTHALENE-6-SULFONIC; 2,3-DIHYDROXYNAPHTHALENE-6-SULFONIC ASID SODIWM HALEN; DIHYDROXY-R-SALT; DIOXY R HALEN; DS ASID, HALEN MONOSODIWM; Sodiwm 2,3-dihydroxynaphthalene-6-sulfonate; SODIWM 6,7-DIHYDROXY-2-NAPHTHALENE SULFONATE; SODIWM 6,7-DIHYDROXYNAPHTHALENE-2-SULFONATE; sodiwm 6,7-dihydroxynaphthalene-2-sulphonate