Description

o-Ethyl Methylphosphonothioate is a key organophosphorus chemical intermediate with significant utility in advanced synthesis. This compound matters for its role in the production of specialized agrochemicals and other performance chemicals requiring a specific phosphonothioate backbone. Industries that need it include manufacturers of crop protection agents, pharmaceutical intermediates, and researchers in chemical synthesis. Its precise structure enables targeted molecular modifications essential for developing new active ingredients.

Application

• Agrochemical Intermediate: A critical building block in the synthesis of certain insecticides and pesticides.
• Chemical Synthesis: Used as a versatile precursor for creating complex organophosphorus compounds in research and development.
• Pharmaceutical Research: Serves as an intermediate in the development of novel active pharmaceutical ingredients (APIs) with specific biological activities.
• Ligand and Catalyst Preparation: Employed in the preparation of specialized ligands for metal catalysis and other advanced chemical processes.
• Flame Retardant Synthon: Can be utilized as a starting material in the development of flame-retardant additives.

Basic Information

Product Name	o-Ethyl Methylphosphonothioate
CAS No.	18005-40-8
Molecular Formula	C3H9O2PS
Molecular Weight	140.14 g/mol
Synonyms	Ethyl Methylphosphonothioate; Methylphosphonothioic Acid O-Ethyl Ester; O-Ethyl Methylphosphonothiolate; Ethyl Methyl Thiophosphonate; Methylphosphonothioic Acid Ethyl Ester; NSC 241240; Ethyl Methylphosphonothioic Acid Ester; Phosphonothioic Acid, Methyl-, O-Ethyl Ester
EINECS	Contact for details

Quality Control

Our o-Ethyl Methylphosphonothioate is manufactured under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatographic purity analysis and identity confirmation. A Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from strong bases and incompatible materials. Due to its highly volatile nature, ensure containers are kept tightly sealed and at stable, moderate temperatures (recommended 15-25°C).

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 95.0%
Water Content	≤ 0.5%

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