(2,6'-Bibenzothiazole)-7-sulfonic acid, 2'-(4-aminophenyl)-6-methyl-, monosodium salt 10360-31-3 33940-15-7 C.I. Direct Yellow 59, monosodium salt (8CI) EINECS 233-781-3 NSC 143368 Sodium 2'-(4-aminophenyl)-6-methyl(2,6'-bibenzothiazole)-7-sulphonate