4-Sulfonamidophenylhydrazine hydrochloride

4-Sulfonamidophenylhydrazine hydrochloride is used in pharmaceutical intermediate and other. It’s mainly used for producing Celecoxib.The process and raw materials as follows:After sulfanilamide diazotized with hydrochloric acid and sodium nitrite, again under the reduction of sodium bisulfite, after acidification, filtration, cooling, crystallization, centrifugation, drying, then package and storage.

Synonyms: Hydrazinobenzene-1-sulfonamide hydrochloride

4-Hydrazinobenzene-1-sulfonamide hydrochloride;

4-Aminosulfonylphenylhydrazine hydrochloride

Molecular Formula: C6H10ClN3O2S

CAS NO:17852-52-7

Molecular weight:223.68

Appearance:white powder

Melting Point:217-219℃

Purity(%): ≥97

Sulfanilamide: ≤1.0

Single impurity(%)≤0.2:

Total impurity content(%):≤1.5

Sulphate ash: ≤2.0