Description

2-Chloro-5-(Chlorosulfonyl)-Benzoicaci is a key bifunctional aromatic intermediate featuring both a carboxylic acid and a highly reactive sulfonyl chloride group. This compound matters for its versatility as a building block in the synthesis of more complex molecules, particularly in the pharmaceutical and agrochemical sectors. It is primarily needed by manufacturers of active pharmaceutical ingredients (APIs), specialty dyes, and advanced polymer materials.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of sulfonamide-based drugs, including diuretics and carbonic anhydrase inhibitors.
• Agrochemical Synthesis: Used in the production of herbicides and fungicides where the sulfonyl moiety is essential for biological activity.
• Dye and Pigment Manufacturing: Serves as an intermediate for creating sulfonated azo dyes and other colorants with enhanced solubility and fastness properties.
• Polymer Modification: Employed to introduce sulfonyl chloride groups into polymer chains for subsequent functionalization, creating ion-exchange resins or specialty coatings.
• Chemical Research & Development: A valuable reagent in organic synthesis for constructing complex molecular architectures in academic and industrial R&D settings.

Basic Information

Product Name	2-Chloro-5-(Chlorosulfonyl)-Benzoicaci
CAS No.	137-64-4
Molecular Formula	C7H4Cl2O4S
Molecular Weight	255.08 g/mol
Synonyms	2-Chloro-5-(chlorosulfonyl)benzoic acid; 5-(Chlorosulfonyl)-2-chlorobenzoic acid; Benzoic acid, 2-chloro-5-(chlorosulfonyl)-; NSC 403107; 2-Chloro-5-chlorosulfonylbenzoic acid; 2-Chloro-5-sulfonylchloride benzoic acid
EINECS	205-303-8

Quality Control

Our 2-Chloro-5-(Chlorosulfonyl)-Benzoicaci is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements of our global B2B clients. A comprehensive Certificate of Analysis (COA) detailing purity, identity, 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, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent degradation from 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%
Melting Point	158°C - 162°C
Loss on Drying	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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