Description

(Methyl)Thiophosphonic Acid o-(3-Chloro-4-Cyanophenyl)o-Ethyl Ester is a specialized organophosphorus compound that serves as a critical intermediate in advanced chemical synthesis. Its unique structure, featuring both chloro and cyano substituents, provides valuable reactivity for constructing complex molecules. This high-purity intermediate is essential for manufacturers in the agrochemical and pharmaceutical sectors who require reliable, consistent building blocks for research and production.

Application

• Agrochemical Intermediate: A key precursor in the synthesis of novel insecticides and herbicides, leveraging its thiophosphonic ester backbone.
• Pharmaceutical Synthesis: Used as a building block for active pharmaceutical ingredients (APIs), particularly in molecules requiring specific phenyl-based scaffolds.
• Chemical Research & Development: Serves as a versatile reagent in academic and industrial R&D for exploring new organophosphorus chemistry and reaction pathways.
• Specialty Chemical Manufacturing: Employed in the production of performance chemicals, such as ligands for catalysis or functional materials.

Basic Information

Product Name	(Methyl)Thiophosphonic Acid o-(3-Chloro-4-Cyanophenyl)o-Ethyl Ester
CAS No.	17702-61-3
Molecular Formula	C10H11ClNO2PS
Molecular Weight	275.69 g/mol
Synonyms	O-(3-Chloro-4-cyanophenyl) O-ethyl methylphosphonothioate; Methylphosphonothioic Acid O-(3-Chloro-4-cyanophenyl) O-Ethyl Ester; Ethyl 3-Chloro-4-cyanophenyl methylphosphonothioate; NSC 332884; Phosphonothioic acid, methyl-, O-(3-chloro-4-cyanophenyl) O-ethyl ester; Methyl thiophosphonate derivative of 3-chloro-4-cyanophenol
EINECS	Contact for details

Quality Control

Our production of (Methyl)Thiophosphonic Acid o-(3-Chloro-4-Cyanophenyl)o-Ethyl Ester (CAS 17702-61-3) adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided and can be tailored to meet specific customer or regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong acids, bases, and oxidizing agents. Due to its chemical nature, it should be handled in accordance with good laboratory/industrial practices.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Related Substances (HPLC)	Total impurities ≤ 3.0%
Loss on Drying	≤ 0.5%

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