Description

Methylphosphonochloridothioic Acid o-Butyl Ester is a specialized organophosphorus compound that serves as a critical intermediate in advanced chemical synthesis. Its unique structure, featuring both chloridothioic and ester functionalities, makes it a valuable building block for creating complex molecules with specific properties. This high-purity intermediate is essential for research and production in the agrochemical and pharmaceutical sectors, where precise molecular architecture is required. We supply this compound globally to support innovation and manufacturing in these demanding fields.

Application

• Agrochemical Intermediate: A key precursor in the synthesis of novel organophosphate and organothiophosphate insecticides and herbicides.
• Pharmaceutical Research: Used as a building block in medicinal chemistry for developing potential therapeutic agents, particularly those targeting enzyme inhibition.
• Chemical Synthesis: Serves as a versatile reagent for introducing the methylphosphonochloridothioate moiety into more complex molecular structures.
• Ligand and Catalyst Development: Employed in the preparation of specialized ligands for metal complexes and catalysts used in organic transformations.
• Material Science: Investigated for the synthesis of flame retardants or specialty polymers with tailored properties.

Basic Information

Product Name	Methylphosphonochloridothioic Acid o-Butyl Ester
CAS No.	18005-38-4
Molecular Formula	C5H12ClOPS
Molecular Weight	186.63 g/mol
Synonyms	O-Butyl Methylphosphonochloridothioate; Butyl Methylphosphonochloridothioate; Methylphosphonochloridothioic Acid Butyl Ester; NSC 163066; Methylphosphonothioic Dichloride, Butyl Ester (related); Butyl (Chloro)(Methyl)phosphonothioate
EINECS	Contact for details

Quality Control

Every batch of Methylphosphonochloridothioic Acid o-Butyl Ester is produced and analyzed under strict quality management protocols to ensure consistency and purity for sensitive synthetic applications. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area, away from incompatible materials such as strong bases and oxidizing agents. Due to its nature as a strong acid/organic solvent, containers must be kept tightly sealed and handled with appropriate chemical safety precautions. Recommended storage temperature is 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Purity (GC)	≥ 96.0%
Water Content (KF)	≤ 0.5%

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