CAS Registry Number

CAS 1779-51-7 — Butyltriphenylphosphonium bromide

Butyltriphenylphosphonium bromide is a quaternary phosphonium salt widely used as a phase-transfer catalyst in organic synthesis, enabling efficient reactions between insoluble reagents. It accelerates processes like alkylation, hydrolysis, and polymerization, improving yield and selectivity in industrial and lab-scale applications. This chemical has a CAS number of 1779-51-7, with the molecular formula (C6H5)3P(Br)CH2CH2CH2CH3 and a molecular weight of 399.30 g/mol. It is stored at ambient conditions but requires careful handling due to its hazardous classification—marked with the signal word "Danger." Molekula supplies Butyltriphenylphosphonium bromide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.