Molecule structure of Sulfaethoxypyridazine (CAS NO.963-14-4) :

IUPAC Name: 4-amino-N-(6-ethoxypyridazin-3-yl)benzenesulfonamide 
Molecular Weight: 294.32956 g/mol
Molecular Formula: C₁₂H₁₄N₄O₃S 
Density: 1.416 g/cm³ 
Melting Point: 182-184 °C
Boiling Point: 565.9 °C at 760 mmHg 
Flash Point: 296 °C
Index of Refraction: 1.632
Molar Refractivity: 74.14 cm³
Molar Volume: 207.7 cm³
Polarizability: 29.39×10^-24 cm³
Surface Tension: 70.9 dyne/cm 
Enthalpy of Vaporization: 84.99 kJ/mol
Vapour Pressure: 7.95E-13 mmHg at 25 °C
XLogP3: 0.7
H-Bond Donor: 2
H-Bond Acceptor: 7
Rotatable Bond Count: 5
Tautomer Count: 2
Exact Mass: 294.078661
MonoIsotopic Mass: 294.078661
Topological Polar Surface Area: 107
Heavy Atom Count: 20 
Complexity: 390
Canonical SMILES: CCOC1=NN=C(C=C1)NS(=O)(=O)C2=CC=C(C=C2)N
InChI: InChI=1S/C12H14N4O3S/c1-2-19-12-8-7-11(14-15-12)16-20(17,18)10-5-3-9(13)4-6-10/h3-8H,2,13H2,1H3,(H,14,16)
InChIKey: FFJIWWBSBCOKLS-UHFFFAOYSA-N
EINECS of Sulfaethoxypyridazine (CAS NO.963-14-4) : 213-514-7

When heated to decomposition it emits acrid smoke and irritating fumes.
RTECS: WO9410000

 Sulfaethoxypyridazine (CAS NO.963-14-4) is also called 5-25-12-00430 (Beilstein Handbook Reference) ; BRN 0286161 ; Cysul ; N(sup 1)-(6-Ethoxy-3-pyridazinyl)sulfanilamide ; Benzenesulfonamide, 4-amino-N-(6-ethoxy-3-pyridazinyl)- (9CI) ; N1-(6-Ethoxypyridazin-3-yl)sulphanilamide ; Sulfanilamide, N(sup 1)-(6-ethoxy-3-pyridazinyl)- .