CAS Registry Number

CAS 2039-82-9 — 4-Bromostyrene (stabilized with TBC)

4-Bromostyrene (stabilized with TBC) is an aromatic brominated vinyl compound widely used in organic synthesis, pharmaceutical intermediates, and polymer chemistry as a key building block for functionalized monomers. This clear to pale yellow liquid (CAS 2039-82-9) has the molecular formula H₂C=CHC₆H₄Br and a molecular weight of 183.05 g/mol. It requires storage between -15°C and -20°C, carries a **Warning** signal word for hazards, and is typically handled under inert conditions. Molekula supplies 4-Bromostyrene from research to bulk quantities with full documentation and ISO 9001:2015 traceability.