Description

Sulfasalazine CAS NO 599-79-1 is a sulfonamide derivative and a prodrug of mesalamine, widely recognized for its anti-inflammatory and immunosuppressive properties. This compound is a critical active pharmaceutical ingredient (API) essential for the formulation of effective therapeutic agents. It is primarily required by pharmaceutical manufacturers and research institutions focused on developing treatments for autoimmune and inflammatory conditions.

Application

• Primary Active Pharmaceutical Ingredient (API) in the manufacture of oral tablets and enteric-coated formulations.
• Key therapeutic agent for the treatment of ulcerative colitis and Crohn's disease.
• Used in the management of rheumatoid arthritis, particularly in disease-modifying antirheumatic drug (DMARD) therapy.
• Essential raw material in pharmaceutical R&D for studying inflammatory bowel disease (IBD) pathways.
• Reference standard in analytical laboratories for quality control and method development.
• Intermediate in the synthesis of more specialized anti-inflammatory drug candidates.

Basic Information

Product Name	Sulfasalazine
CAS No.	599-79-1
Molecular Formula	C18H14N4O5S
Molecular Weight	398.39 g/mol
Synonyms	Salazosulfapyridine; 2-Hydroxy-5-[(E)-2-{4-[(pyridin-2-yl)sulfamoyl]phenyl}diazen-1-yl]benzoic acid; Azulfidine; Salicylazosulfapyridine; SASP; Sulphasalazine; Azopyrine; Salisulf
EINECS	209-974-5

Quality Control

Our Sulfasalazine is manufactured under strict quality management systems, targeting compliance with major pharmacopoeial standards such as USP and EP. Each batch undergoes comprehensive analytical testing including identification, assay, and impurity profiling. A Certificate of Analysis (COA) documenting purity, related substances, and residual solvents is provided to ensure traceability and regulatory readiness for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive and should be handled under appropriate conditions to maintain stability.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder
Identification (IR)	Conforms
Identification (HPLC)	Conforms
Assay (HPLC)	98.0% - 102.0%
Related Substances (HPLC)	NMT 1.0% total impurities
Loss on Drying	NMT 1.0%
Residue on Ignition	NMT 0.1%
Heavy Metals	NMT 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.