Description

Demephion-S CAS NO 2587-90-8 is a specialized organophosphorus compound widely utilized as a key intermediate in advanced chemical synthesis. Its primary value lies in enabling the production of high-performance materials and fine chemicals where precise molecular architecture is critical. This product is essential for research and development laboratories, agrochemical manufacturers, and pharmaceutical companies seeking to develop novel active ingredients and functional molecules.

Application

• Agrochemical Intermediate: A critical precursor in the synthesis of advanced insecticides and pesticides, contributing to crop protection solutions.
• Pharmaceutical Research: Serves as a versatile building block for medicinal chemistry, enabling the development of new pharmacologically active compounds.
• Chemical Synthesis: Employed in organic synthesis for constructing complex organophosphorus structures used in materials science and specialty chemicals.
• Laboratory Reagent: Used as a standard or reagent in analytical and research laboratories for method development and chemical studies.
• Flame Retardant Development: Acts as a potential intermediate in the research and production of flame-retardant additives for polymers and textiles.

Basic Information

Product Name	Demephion-S
CAS No.	2587-90-8
Molecular Formula	C8H19O3PS2
Molecular Weight	258.34 g/mol
Synonyms	O,O-Dimethyl S-[2-(ethylthio)ethyl] phosphorothioate; S-[2-(Ethylthio)ethyl] O,O-dimethyl phosphorothioate; Demephion S; Demephion-S; Phosphorothioic acid, O,O-dimethyl S-[2-(ethylthio)ethyl] ester; ENT 25,671
EINECS	219-980-7

Quality Control

Our Demephion-S is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatographic purity assays and identity confirmation. A detailed Certificate of Analysis (COA) documenting purity, assay, and relevant physical parameters 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, dry, and well-ventilated area at controlled room temperature (15-25°C). Due to its easily oxidized nature, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 5.0%
Specific Gravity (20°C)	1.180 - 1.210

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