Description

Benzenesulfinic Acid, 3-(Chlorocarbonyl)- (9Ci) is a specialized aromatic sulfinic acid derivative featuring a reactive acid chloride functional group. This compound serves as a versatile and high-value chemical building block for synthesizing more complex sulfonamide and sulfonate structures. It is primarily utilized by pharmaceutical intermediates manufacturers and agrochemical research teams for developing novel active ingredients.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of sulfonamide-based drug candidates, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in research and development for creating novel herbicides, fungicides, and plant growth regulators.
• Polymer Chemistry: Acts as a monomer or functionalization agent for producing specialty polymers with sulfonic acid groups.
• Dye and Pigment Manufacturing: Employed in the synthesis of sulfonated dyes and colorants for enhanced solubility and properties.
• Ligand and Catalyst Development: Useful for preparing chiral sulfinyl ligands used in asymmetric catalysis.
• Chemical Research & Development: Serves as a versatile reagent for introducing the benzenesulfinic acid moiety into target molecules.

Basic Information

Product Name	Benzenesulfinic Acid, 3-(Chlorocarbonyl)- (9Ci)
CAS No.	503622-66-0
Molecular Formula	C7H5ClO3S
Molecular Weight	204.63 g/mol
Synonyms	3-(Chlorocarbonyl)benzenesulfinic acid; 3-Carboxybenzenesulfinic acid chloride; m-Carboxybenzenesulfinic acid chloride; Isophthalaldehydic acid sulfinic acid chloride; 3-Sulfinobenzoyl chloride; Benzoic acid, 3-sulfino-, chloride; m-Sulfinobenzoyl chloride
EINECS	Contact for details

Quality Control

Our production of Benzenesulfinic Acid, 3-(Chlorocarbonyl)- adheres to stringent internal quality standards to ensure batch-to-batch consistency and high purity for research and industrial use. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment. We support custom synthesis and can tailor specifications to meet specific project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%

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