O,O-Diethyl S-methyl Phosphorothioate CAS 2404-05-9

Purity 97%+In StockPharmaceutical Standards
CAS No.2404-05-9
Molecular FormulaC5H13O3PS
Molecular Weight184.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

O,O-Diethyl S-methyl Phosphorothioate CAS 2404-05-9 chemical structure

Description

The molecular framework of O,O-Diethyl S-methyl Phosphorothioate (C5H13O3PS) is characterized by a sulfone group, a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development.

CATO supplies O,O-Diethyl S-methyl Phosphorothioate (CAS 2404-05-9), a certified reference material (molecular formula C5H13O3PS, MW 184.19 g/mol) for analytical method development and quality control.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC5H13O3PS
Molecular Weight184.19 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)-0.5
CAS Registry Year (est.)1957
Sulfur Atoms1

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