2-(Diphenylphosphorothioyl)-1-phenylethanone CAS 58156-55-1

Purity 97%+In StockPharmaceutical Standards
CAS No.58156-55-1
Molecular FormulaC20H17OPS
Molecular Weight336.39 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-(Diphenylphosphorothioyl)-1-phenylethanone CAS 58156-55-1 chemical structure

Description

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.

2-(Diphenylphosphorothioyl)-1-phenylethanone (CAS 58156-55-1), molecular formula C20H17OPS and molecular weight 336.39 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a steroid core, sulfur-containing functionality, organophosphorus functionality, a hydroxyl group, an ether linkage, 2-(Diphenylphosphorothioyl)-1-phenylethanone is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 336.39 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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 FormulaC20H17OPS
Molecular Weight336.39 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)12.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1973
Sulfur Atoms1

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Why CATO?