Description

n-(3-Fluoro-4-Methylphenyl)-4-Methyl-Benzenesulfonamide (Ws203348) is a specialized sulfonamide derivative, a high-value chemical intermediate designed for advanced synthesis. This compound matters for its role as a critical building block in the development of novel active pharmaceutical ingredients (APIs) and agrochemicals, where its unique fluorine-substituted aromatic structure imparts specific biological activity and metabolic stability. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and advanced material sectors seeking to innovate new molecular entities.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of new drug candidates, particularly in medicinal chemistry programs targeting central nervous system (CNS) disorders, inflammation, and oncology.
• Agrochemical Synthesis: Serves as a precursor for novel herbicides, fungicides, and insecticides, leveraging the fluorine atom to enhance bioactivity and environmental persistence.
• Material Science Research: Used in the synthesis of specialty polymers and advanced organic electronic materials where sulfonamide groups can modify solubility and electronic properties.
• Chemical Biology Probes: Employed in the design and synthesis of molecular probes for studying enzyme function and biological pathways.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for scale-up and production under cGMP for clinical trial materials.

Basic Information

Product Name	n-(3-Fluoro-4-Methylphenyl)-4-Methyl-Benzenesulfonamide (Ws203348)
CAS No.	876556-75-1
Molecular Formula	C14H14FNO2S
Molecular Weight	279.33 g/mol
Synonyms	4-Methyl-N-(3-fluoro-4-methylphenyl)benzenesulfonamide; Benzenesulfonamide, 4-methyl-N-(3-fluoro-4-methylphenyl)-; Ws-203348; WS203348; N-(3-Fluoro-4-methylphenyl)-4-methylbenzenesulfonamide; 4-Methylbenzenesulfonamide, N-(3-fluoro-4-methylphenyl)-; Toluene-4-sulfonic acid (3-fluoro-4-methyl-phenyl)-amide
EINECS	Contact for details

Quality Control

Our n-(3-Fluoro-4-Methylphenyl)-4-Methyl-Benzenesulfonamide is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and MS, to ensure high purity and consistent chemical identity. A comprehensive Certificate of Analysis (COA) detailing purity, impurities, and physical characteristics is provided with each shipment to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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