Bis[3,5-bis(1,1-dimethylethyl)phenyl]phosphine oxide CAS 325773-65-7

Description

Bis[3,5-bis(1,1-dimethylethyl)phenyl]phosphine oxide (CAS 325773-65-7) is a high-purity analytical reference standard with the molecular formula C28H43OP and a molecular weight of 426.61 g/mol.

Owing to a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage, Bis[3,5-bis(1,1-dimethylethyl)phenyl]phosphine oxide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 426.61 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.

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

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com