CAS Registry Number

CAS 2751-90-8 — Tetraphenylphosponium bromide

Tetraphenylphosphonium bromide is an organophosphorus compound used primarily as a phase-transfer catalyst in organic synthesis, facilitating reactions between hydrophobic and hydrophilic reagents. It is a white to off-white crystalline solid with high solubility in polar organic solvents. This chemical has a CAS number of 2751-90-8, a molecular formula of (C6H5)4P(Br), and a molecular weight of 419.29 g/mol. It should be stored at ambient conditions and handled with caution, as it carries a warning signal word for potential hazards. Molekula supplies Tetraphenylphosphonium bromide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.