Description

1-Butanesulfonyl Chloride is a versatile and reactive organosulfur compound used as a key sulfonylation reagent in organic synthesis. Its primary value lies in its ability to introduce the butanesulfonyl group, a crucial step in the development of pharmaceuticals, agrochemicals, and specialty materials. This high-purity intermediate is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries seeking reliable and scalable building blocks.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of active pharmaceutical ingredients (APIs), particularly in creating sulfonamide drugs and other bioactive molecules.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides where the sulfonyl moiety enhances biological activity.
• Polymer & Material Science: Serves as a monomer or modifying agent in the creation of specialty polymers, ion-exchange resins, and advanced materials.
• Chemical Research & Development: A fundamental reagent for constructing complex molecular architectures in academic and industrial R&D laboratories.
• Dye & Pigment Manufacturing: Employed in the synthesis of sulfonated dyes and colorants.
• Ligand & Catalyst Preparation: Useful for synthesizing specialized ligands and catalysts used in asymmetric synthesis and other catalytic processes.

Basic Information

Product Name	1-Butanesulfonyl Chloride
CAS No.	2386-60-9
Molecular Formula	C₄H₉ClO₂S
Molecular Weight	156.63 g/mol
Synonyms	Butane-1-sulfonyl chloride; n-Butanesulfonyl chloride; 1-Butylsulfonyl chloride; Butylsulfonyl chloride; NSC 404087; Butanesulfonic acid chloride; Butyl sulfone chloride
EINECS	219-200-7

Quality Control

Our 1-Butanesulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including assay by titration and impurity profile analysis by GC/HPLC, to ensure it meets the high standards required for synthetic applications. A Certificate of Analysis (COA) detailing purity, identity, and specific test results is provided with every shipment to guarantee traceability and batch-to-batch consistency.

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 and moisture-sensitive nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen) to prevent decomposition. Keep away from strong bases, oxidizers, and sources of ignition.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC/Titration)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC/HPLC)	Report and comply with limits
Density	~1.20 g/cm³

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