4-bromophenyl isocyanate

4-Bromophenyl isocyanate (CAS 2493-02-9), also known as p-bromophenyl isocyanate, is a reactive aryl isocyanate used as a building block in organic synthesis and polymer chemistry.

Where is 4-bromophenyl isocyanate used?

• Pharmaceutical synthesis: intermediate for urea-containing drug candidates and bioactive compounds, with bromine enabling cross-coupling
• Agrochemical and fine chemical manufacturing: introduces the bromophenyl-urea motif into active ingredient scaffolds
• Polymer research: monomer for specialty polyureas
• Biotechnology: preparation of labeled probes and derivatization reagents for analytical applications
• The bromine substituent provides a handle for further functionalization in pharmaceutical and specialty chemical workflows.

Commercial specifications

• Purity commonly 97% or higher by GC
• Packaging from small to bulk quantities