Description

S-Butyl Chlorothioformate, 96% is a versatile organosulfur reagent primarily used as a key intermediate in organic synthesis. Its high reactivity makes it valuable for introducing the thiocarbonyl moiety and for constructing complex sulfur-containing molecules. This product is essential for research and development laboratories and industrial-scale production in the pharmaceutical and agrochemical sectors, where precise chemical building blocks are required.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing thioester or thiocarbamate functional groups.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides, where sulfur-based compounds are common.
• Polymer Chemistry: Acts as a modifying agent or chain transfer agent in the synthesis of specialty polymers and materials.
• Chemical Research: Employed in academic and industrial R&D for novel organic transformations, including the synthesis of heterocycles.
• Peptide Chemistry: Can be utilized for the protection of amino groups or as a coupling agent in peptide synthesis.
• Ligand and Catalyst Preparation: Serves as a precursor for synthesizing sulfur-based ligands used in coordination chemistry and catalysis.

Basic Information

Product Name	S-Butyl Chlorothioformate, 96%
CAS No.	13889-94-6
Molecular Formula	C5H9ClOS
Molecular Weight	152.64 g/mol
Synonyms	Butyl Chlorothioformate; Thiocarbonyl Chloride, Butyl Ester; Chlorothioformic Acid S-Butyl Ester; S-Butyl Chloridothioformate; Butylthiochloroformate; NSC 9375; Butyl Chlorothiolformate; Butyl Chloromethanethioate
EINECS	237-654-8

Quality Control

Our S-Butyl Chlorothioformate, 96% is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including GC and NMR to verify identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurities, and physical properties is provided with every shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases, oxidizing agents, and sources of ignition. Due to its highly volatile nature, keep containers tightly sealed when not in use. Recommended storage temperature is 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 96.0%
Density (at 20°C)	1.10 - 1.12 g/mL
Refractive Index (n20D)	1.465 - 1.475
Related Impurities (GC)	≤ 2.0% (total)

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