Description

4-(Chlorosulfonyl)-2-Nitrobenzoic Acid is a versatile and reactive aromatic sulfonyl chloride derivative, serving as a critical building block in advanced organic synthesis. Its unique bifunctional structure, featuring both a reactive sulfonyl chloride group and a carboxylic acid moiety, makes it an indispensable intermediate for constructing complex molecules. This compound is primarily sought after by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for the development of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of sulfonamide-based drugs, including diuretics, carbonic anhydrase inhibitors, and antiviral agents.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and pesticides where the sulfonamide group imparts specific biological activity.
• Dyestuff and Pigment Manufacturing: Serves as an intermediate for creating azo dyes and other complex colorants.
• Polymer Chemistry: Acts as a monomer or cross-linking agent for producing specialty polymers with specific functional properties.
• Chemical Research & Development: A valuable reagent for medicinal chemistry and process development in laboratory settings.
• Ligand Synthesis: Used to prepare specialized ligands for catalysis and metal complexation studies.

Basic Information

Product Name	4-(Chlorosulfonyl)-2-Nitrobenzoic Acid
CAS No.	54090-40-3
Molecular Formula	C7H4ClNO6S
Molecular Weight	265.63 g/mol
Synonyms	2-Nitro-4-(chlorosulfonyl)benzoic Acid; 4-Chlorosulfonyl-2-nitrobenzoic Acid; Benzoic acid, 4-(chlorosulfonyl)-2-nitro-; 2-Nitro-4-chlorosulfonylbenzoic Acid; NSC 403796; 4-Carboxy-3-nitrobenzenesulfonyl chloride
EINECS	Contact for details

Quality Control

Our production of 4-(Chlorosulfonyl)-2-Nitrobenzoic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and reliability. Each lot is analyzed using advanced techniques including HPLC, NMR, and titration to verify identity, purity, and the absence of critical impurities. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under dry conditions to prevent decomposition. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases and amines.

Specification

Item	Specification
Appearance	Off-white to pale yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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