Phenyldi-p-tolylphosphine CAS 19934-95-3

Purity 97%+In StockPharmaceutical Standards
CAS No.19934-95-3
Molecular FormulaC20H19P
Molecular Weight290.34 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Phenyldi-p-tolylphosphine CAS 19934-95-3 chemical structure

Description

Phenyldi-p-tolylphosphine (CAS 19934-95-3), molecular formula C20H19P and molecular weight 290.34 g/mol, is a CATO reference standard with documented purity and traceability.

Phenyldi-p-tolylphosphine (C20H19P) contains organophosphorus functionality, a polycyclic aromatic system. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).

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.

As a certified reference material (CRM), Phenyldi-p-tolylphosphine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC20H19P
Molecular Weight290.34 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)11.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962

Related Phenyldi Standards

Recommended Standards

Why CATO?