Description

Phosphorothioic Acid o-Methyl O,o-Diphenyl Ester is a specialized organophosphorus compound with a defined molecular structure. This chemical is significant as a key intermediate and building block in advanced synthetic chemistry, offering precise reactivity for constructing complex molecules. It is primarily needed by research institutions and industrial R&D departments focused on developing novel agrochemicals, pharmaceuticals, and functional materials.

Application

• Agrochemical Intermediate: A critical precursor in the synthesis of novel insecticides and pesticides, leveraging its organophosphorus backbone.
• Pharmaceutical Research: Used as a building block in medicinal chemistry for the development of new active pharmaceutical ingredients (APIs).
• Chemical Synthesis: Serves as a versatile reagent in organic synthesis for introducing specific functional groups or creating complex molecular architectures.
• Ligand and Catalyst Development: Employed in the research and preparation of specialized ligands for metal catalysis and coordination chemistry.
• Material Science Research: Investigated as a monomer or additive for creating polymers with specific properties like flame retardancy.

Basic Information

Product Name	Phosphorothioic Acid o-Methyl O,o-Diphenyl Ester
CAS No.	5138-73-8
Molecular Formula	C13H13O3PS
Molecular Weight	280.28 g/mol
Synonyms	O-Methyl O,O-Diphenyl Phosphorothioate; Diphenyl Methyl Phosphorothioate; Methyl Diphenyl Phosphorothioate; Phosphorothioic Acid, Methyl Diphenyl Ester; NSC 89333; O,O-Diphenyl O-Methyl Phosphorothioate; Methyl Diphenyl Thiophosphate
EINECS	225-882-9

Quality Control

Our production of Phosphorothioic Acid o-Methyl O,o-Diphenyl Ester (CAS 5138-73-8) adheres to stringent internal quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced chromatographic and spectroscopic techniques. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

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. Recommended storage temperature is 2-8°C for long-term stability. Keep container tightly sealed when not in use to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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