Description

Phthalylsulfathiazole is a synthetic sulfonamide derivative with potent bacteriostatic activity. This compound is valued for its specific action against a broad spectrum of intestinal pathogens, making it a critical intermediate in pharmaceutical manufacturing. It is primarily utilized by producers of veterinary and human medicinal products requiring targeted gastrointestinal treatments.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of sulfonamide-based antibacterial drugs.
• Veterinary Medicine: Formulation of medicated feeds and treatments for bacterial enteritis in livestock and poultry.
• Gastrointestinal Therapeutics: Used in the development of specialized drugs for treating bacterial infections of the gut.
• Research & Development: Serves as a reference standard and active compound in microbiological and pharmacological research.
• API Manufacturing: Employed in the controlled production of Active Pharmaceutical Ingredients (APIs) for systemic sulfonamides.

Basic Information

Product Name	Phthalylsulfathiazole
CAS No.	85-73-4
Molecular Formula	C17H13N3O5S2
Molecular Weight	403.43 g/mol
Synonyms	Phthalylsulfathiazole; 4'-(2-Thiazolylsulfamoyl)phthalic anhydride; N1-(2-Thiazolyl)sulfanilamide phthalyl; Sulfathalidine (historical/trade name); Phtalylsulfathiazole; PST; Talidine; Ftalilsulfatiazol; Phthalylsulfathiazolum
EINECS	201-628-8

Quality Control

Our Phthalylsulfathiazole is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including identification, assay, and impurity profiling, to ensure it meets high-purity standards suitable for pharmaceutical use. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep the container tightly sealed to protect from moisture.

Specification

Item	Specification
Appearance	White or almost white, crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	98.0% - 102.0% (on dried basis)
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any individual impurity ≤ 0.5%

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