Description

Methylphosphonothioic Acid S-Butyl o-Ethyl Ester is a key organophosphorus chemical intermediate with significant utility in advanced synthesis. Its primary commercial value lies in its role as a critical precursor for the development of specialized agrochemicals and other performance chemicals. This compound is essential for manufacturers and R&D facilities in the agrochemical, pharmaceutical, and fine chemical sectors seeking to develop novel active ingredients or complex molecules.

Application

• Agrochemical Intermediate: A vital building block in the synthesis of organophosphate insecticides and herbicides.
• Chemical Synthesis: Serves as a versatile precursor for creating complex phosphonothioate and phosphorothioate derivatives in research and development.
• Ligand and Catalyst Preparation: Used in the preparation of specialized ligands for metal catalysis and coordination chemistry.
• Pharmaceutical Research: Employed as an intermediate in the discovery and development of novel therapeutic agents.
• Flame Retardant Synergist Development: Investigated for use in creating advanced flame-retardant formulations.
• Material Science: Utilized in the synthesis of functionalized polymers and advanced materials.

Basic Information

Product Name	Methylphosphonothioic Acid S-Butyl o-Ethyl Ester
CAS No.	13088-84-1
Molecular Formula	C7H17O2PS
Molecular Weight	196.25 g/mol
Synonyms	O-Ethyl S-Butyl Methylphosphonothioate; Ethyl S-Butyl Methylphosphonothiolate; S-Butyl O-Ethyl Methylphosphonothioate; Methylphosphonothioic Acid, O-Ethyl S-Butyl Ester; Phosphonothioic Acid, Methyl-, O-Ethyl S-Butyl Ester; ENT 27991; Butyl Ethyl Methylphosphonothioate
EINECS	Contact for details

Quality Control

Our production of Methylphosphonothioic Acid S-Butyl o-Ethyl Ester adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatography and spectroscopy, to verify identity and assay. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Specific Gravity (20°C)	1.050 - 1.100
Refractive Index (n20D)	1.460 - 1.480

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