5-25-12-00430 (Beilstein Handbook Reference) 963-14-4 BRN 0286161 Benzenesulfonamide, 4-amino-N-(6-ethoxy-3-pyridazinyl)- (9CI) Cysul EINECS 213-514-7 N(sup 1)-(6-Ethoxy-3-pyridazinyl)sulfanilamide N1-(6-Ethoxypyridazin-3-yl)sulphanilamide SULFAETHOXYPYRIDAZINE Sulfanilamide, N(sup 1)-(6-ethoxy-3-pyridazinyl)-