Ethyldiphenylphosphine oxide CAS 1733-57-9

Purity 97%+In StockPharmaceutical Standards
CAS No.1733-57-9
Molecular FormulaC14H15OP
Molecular Weight230.24 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ethyldiphenylphosphine oxide CAS 1733-57-9 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.

Ethyldiphenylphosphine oxide (CAS 1733-57-9) is a high-purity analytical reference standard with the molecular formula C14H15OP and a molecular weight of 230.24 g/mol.

Owing to organophosphorus functionality, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Ethyldiphenylphosphine oxide is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 230.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

CATO manufactures Ethyldiphenylphosphine oxide 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

Molecular FormulaC14H15OP
Molecular Weight230.24 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)7.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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