CAS Registry Number

CAS 1779-49-3 — Methyltriphenylphosphonium bromide

Methyltriphenylphosphonium bromide is a quaternary phosphonium salt used in organic synthesis, particularly in the synthesis of phosphorus ylides and as a phase-transfer catalyst. It is a crystalline solid with a molecular formula of C19H18BrP, a molecular weight of 357.22 g/mol, and is stable at ambient storage conditions. It is classified as dangerous. Molekula supplies Methyltriphenylphosphonium bromide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.