Description

N4-Acetylsulfaphenazole CAS NO 855-91-4 is a key chemical intermediate and reference standard of significant importance in pharmaceutical research and development. This compound is primarily valued for its role as a precursor or metabolite in the study of sulfonamide-based therapeutics. It is essential for researchers and manufacturers in the pharmaceutical and fine chemical synthesis sectors who require high-purity building blocks for drug discovery, analytical method development, and metabolic studies.

Application

• Pharmaceutical Intermediate: Serves as a critical building block in the synthesis of more complex sulfonamide drug candidates.
• Metabolite Reference Standard: Used in analytical laboratories for the identification and quantification of drug metabolites in pharmacokinetic and bioanalytical studies.
• Biochemical Research: Employed in studies investigating the mechanism of action and metabolic pathways of sulfaphenazole and related compounds.
• Quality Control & Method Development: Acts as a certified reference material (CRM) for calibrating instruments and validating analytical methods like HPLC and LC-MS in QA/QC labs.
• Academic Research: Utilized in university and institutional labs for chemical education and advanced research in medicinal chemistry.

Basic Information

Product Name	N4-Acetylsulfaphenazole
CAS No.	855-91-4
Molecular Formula	C15H15N3O3S
Molecular Weight	317.36 g/mol
Synonyms	N4-Acetylsulfaphenazole; 4-Acetamido-N-(1-phenyl-1H-pyrazol-5-yl)benzenesulfonamide; 1-[4-[(1-Phenyl-1H-pyrazol-5-yl)sulfamoyl]phenyl]ethanone; Sulfaphenazole N4-acetate; Acetylsulfaphenazole; N-Acetylsulfaphenazole
EINECS	Contact for details

Quality Control

Our N4-Acetylsulfaphenazole is produced and handled under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide full traceability and Certificates of Analysis (COA) are available for all shipments, detailing key parameters such as assay and impurity profiles. Our quality commitment aligns with the standards expected for pharmaceutical intermediates and reference materials.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from heat and incompatible materials. For long-term storage, consider conditions that minimize exposure to moisture and atmospheric oxygen.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Individual impurity ≤ 0.5% Total impurities ≤ 1.0%

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