Description

Propyl 4-(Chlorosulfonyl)Benzoate is a high-purity, versatile organic intermediate characterized by its reactive chlorosulfonyl and ester functional groups. This compound is critical for the synthesis of more complex molecules, offering a precise building block for pharmaceutical and agrochemical research and development. It is primarily sought after by R&D chemists and process development scientists in the fine chemical, pharmaceutical, and crop protection industries for constructing sulfonamide derivatives and other active ingredients.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those containing sulfonamide moieties for therapeutic applications.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and insecticides where the benzoate and sulfonyl chloride groups are incorporated into the active molecule.
• Material Science Research: Serves as a monomer or modifying agent in the creation of specialized polymers and liquid crystals with tailored properties.
• Chemical Biology & Proteomics: Utilized as a reactive handle for bioconjugation and labeling of biomolecules due to its electrophilic chlorosulfonyl group.
• Custom Synthesis & Contract Manufacturing: An essential raw material for custom synthesis houses producing bespoke compounds for client-specific projects.

Basic Information

Product Name	Propyl 4-(Chlorosulfonyl)Benzoate
CAS No.	923207-43-6
Molecular Formula	C10H11ClO4S
Molecular Weight	262.71 g/mol
Synonyms	4-(Chlorosulfonyl)benzoic acid propyl ester; Benzoic acid, 4-(chlorosulfonyl)-, propyl ester; Propyl 4-chlorosulfonylbenzoate; n-Propyl 4-(chlorosulfonyl)benzoate; 4-(Propoxycarbonyl)benzenesulfonyl chloride
EINECS	Contact for details

Quality Control

Every batch of Propyl 4-(Chlorosulfonyl)Benzoate is manufactured and tested under a strict quality management system. We ensure the product meets high-purity standards suitable for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and consistency for your critical applications.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation.

Specification

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

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