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Alias: salicylazosulfapyridine; 2-hydroxy-5-[[4-[(2-pyridinylamino)sulfonyl]phenyl]azo]benzoic acid; 5-(p-(2-pyridylsulfamoyl)phenylazo)salicylic acid; sulfasalazine; Sulphasalazine; (3Z)-6-oxo-3-{[4-(pyridin-2-ylsulfamoyl)phenyl]hydrazono}cyclohexa-1,4-diene-1-carboxylic acid; 6-oxo-3-{[4-(pyridin-2-ylsulfamoyl)phenyl]hydrazono}cyclohexa-1,4-diene-1-carboxylic acid; 2-hydroxy-5-{[4-(pyridin-2-ylsulfamoyl)phenyl]diazenyl}benzoic acid; 2-hydroxy-5-{(E)-[4-(pyridin-2-ylsulfamoyl)phenyl]diazenyl}benzoic acid

Appearance: bright yellow or brownish yellow powder;

Purity: 97.0-101.0%;

Standard: USP32;

Molecular weight: 398.39;

CAS: 599-79-1;

Single impurity: ≤2.0%;

Total impurity: ≤4.0%;

Chloride: ≤0.014%;

Loss on drying: ≤1.0%;

Residue on ignition: ≤0.5%;

Heavy metal: ≤0.002%;

Packaging: 25KG/drum;

Uses: Sulfonamides of sulfonamides; for therapy of chronic ulcer conjunctivitis

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