S-(4-chlorophenyl) O,O-diethyl phosphorothioate CAS 4524-70-3

Description

Compared with other compounds in its class, the molecular weight of 280.71 g/mol gives S-(4-chlorophenyl) O,O-diethyl phosphorothioate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

S-(4-chlorophenyl) O,O-diethyl phosphorothioate (CAS 4524-70-3), molecular formula C10H14ClO3PS and molecular weight 280.71 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a sulfone group, a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, S-(4-chlorophenyl) O,O-diethyl phosphorothioate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 280.71 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

CATO manufactures S-(4-chlorophenyl) O,O-diethyl phosphorothioate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

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