Description

2,3-Dichloro-5-(Chlorosulfonyl)Benzoic Acid is a high-value, multi-functional aromatic sulfonyl chloride derivative. This compound serves as a critical synthetic intermediate, prized for its reactive chlorosulfonyl group which enables the construction of complex sulfonamide and sulfonate structures. It is primarily sought after by research and development chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries for synthesizing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of sulfonamide-based drug candidates, including diuretics, carbonic anhydrase inhibitors, and anti-bacterial agents.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators that incorporate sulfonylurea or sulfonamide moieties.
• Dyestuff and Pigment Manufacturing: Serves as a precursor for creating sulfonated dyes and organic pigments with enhanced solubility and color fastness.
• Polymer Modification: Employed to introduce sulfonyl chloride groups into polymer chains for subsequent functionalization, improving properties like hydrophilicity or enabling cross-linking.
• Chemical Research & Development: A versatile reagent in organic synthesis for constructing complex molecules in medicinal chemistry and material science projects.
• Ligand and Catalyst Preparation: Useful for synthesizing specialized ligands containing sulfonamide groups for coordination chemistry and catalytic applications.

Basic Information

Product Name	2,3-Dichloro-5-(Chlorosulfonyl)Benzoic Acid
CAS No.	53552-95-7
Molecular Formula	C7H3Cl3O4S
Molecular Weight	289.52 g/mol
Synonyms	5-(Chlorosulfonyl)-2,3-dichlorobenzoic Acid; 2,3-Dichloro-5-chlorosulfonylbenzoic Acid; Benzoic acid, 2,3-dichloro-5-(chlorosulfonyl)-; 2,3-Dichlorobenzene-1-sulfonyl chloride-5-carboxylic acid
EINECS	Contact for details

Quality Control

Our production of 2,3-Dichloro-5-(Chlorosulfonyl)Benzoic Acid adheres to stringent in-process controls and final batch testing to ensure consistent purity and performance. Every lot is characterized using advanced analytical techniques including HPLC, NMR, and IR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation by atmospheric moisture. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Melting Point	Contact for details

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