Sulfaethoxypyridazine

Also known as: 4-amino-N-(6-ethoxypyridazin-3-yl)benzenesulfonamide, N1-(6-ethoxypyridazin-3-yl)sulphanilamide, Benzenesulfonamide, 4-amino-N-(6-ethoxy-3-pyridazinyl)-, Cysul, EINECS 213-514-7, 3-Sulfanilylamino-6-ethoxypyridazine, 6-Ethoxy-3-sulfanilaminopyridazine

Sulfaethoxypyridazine (CAS 963-14-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H14N4O3S and a molecular weight of 294.33000 g/mol. Key properties include a melting point of 182-184ºC, a boiling point of 565.9ºC at 760mmHg, a density of 1.416g/cm3 and a flash point of 296ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 963-14-4
Jingsj CID: J-1960626-9
Molecular Formula: C₁₂H₁₄N₄O₃S
Molecular Weight: 294.33000 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	182-184ºC
Boiling Point	565.9ºC at 760mmHg
Density	1.416g/cm3
Flash Point	296ºC
Exact Mass	294.07900
PSA	115.58000
LogP	2.99330
Refractive Index	1.632

Activity & Biological Data

Target	Antibacterial[1]
Additional Information	[1]. Ribelin WE, et al. Development of cataracts in dogs and rats from prolonged feeding of sulfaethoxypyridazine. Toxicol Appl Pharmacol. 1967 May;10(3):557-64.

Customs & Trade Information

HS Code	2935009090
Summary	2935009090 other sulphonamides VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:35.0%

Frequently Asked Questions

What is the CAS number of Sulfaethoxypyridazine?

The CAS number of Sulfaethoxypyridazine is 963-14-4.

What are the molecular formula and molecular weight of Sulfaethoxypyridazine?

Sulfaethoxypyridazine has molecular formula C12H14N4O3S and molecular weight 294.33000 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Sulfaethoxypyridazine (CAS 963-14-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1960626-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.