1-bromo-4-iodobenzene

1-Bromo-4-iodobenzene (CAS 589-87-7), also known as p-bromoiodobenzene, is a dual-halogenated aromatic building block used in pharmaceutical synthesis and specialty chemical manufacturing.

Where is 1-bromo-4-iodobenzene used?

• Pharmaceutical intermediates: precursor in palladium-catalyzed reactions exploiting the differential reactivity of bromine and iodine for regioselective functionalization
• Polymer and materials: introduction of halogenated aryl units into flame-retardant polymer systems with controlled halogen loading
• Dyes and pigments: reactive intermediate for brominated and iodinated aromatic colorants in textile and leather applications
• Specialty monomers and cross-linkers for advanced polymer formulations target specific thermal or electronic performance profiles.

Good to know: The two distinct halogen substituents on the benzene ring allow selective cross-coupling reactions.

Commercial specifications

• Purity typically 98% to 99%+ for fine chemical synthesis
• Technical and high-purity grades
• Packaging from small laboratory quantities up to multi-kilogram lots