O,O-Diethyl S-phenyl phosphorothioate CAS 1889-58-3

Purity 97%+In StockPharmaceutical Standards
CAS No.1889-58-3
Molecular FormulaC10H15O3PS
Molecular Weight246.26 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

O,O-Diethyl S-phenyl phosphorothioate CAS 1889-58-3 chemical structure

Description

Based on its molecular formula C10H15O3PS, O,O-Diethyl S-phenyl phosphorothioate contains a sulfone group, a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 246.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

O,O-Diethyl S-phenyl phosphorothioate (CAS 1889-58-3), molecular formula C10H15O3PS and molecular weight 246.26 g/mol, is a CATO reference standard with documented purity and traceability.

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 FormulaC10H15O3PS
Molecular Weight246.26 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.5
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1957
Sulfur Atoms1

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