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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

4-Bromobiphenyl | CAS 92-66-0

A para-brominated biphenyl building block that supplies a preassembled two-ring aromatic unit and a defined carbon–bromine reaction handle for further molecular construction.

CAS92-66-0
Molecular formulaC12H9Br
Molecular weight233.1 g/mol

Product overview

One bromine at the para position distinguishes this material from other bromobiphenyl isomers and from multiply brominated mixtures. The two phenyl rings are already connected, so subsequent chemistry can target the remaining aryl bromide. Incoming-material review should confirm substitution position and resolve parent biphenyl and other brominated components.

Chemical identity

Chemical name
4-Bromobiphenyl
CAS number
92-66-0
Molecular formula
C12H9Br
Molecular weight
233.1 g/mol

Application context

Published synthesis uses 4-bromobiphenyl to prepare 4-biphenylthiolate. More generally, its aryl-bromide handle supports development of substituted biphenyl structures. For a selected conversion, the relevant question is whether the starting aromatic and bromination profile is controlled well enough to avoid carrying closely related structures into the product. If catalyst residues matter to a later material, agree targeted metal testing based on the actual manufacturing route.

Chemistry and synthetic role

The aryl C–Br bond is a functionalization site on a preformed biphenyl scaffold.

Quality review

Confirm para substitution

Use structure-sensitive identification to distinguish ortho and meta isomers.

Resolve bromination variants

Agree reporting of biphenyl and relevant additional-bromine species.

Link metals to the route

Add selected catalyst-metal criteria only when downstream requirements justify them.

Preparing a specification

Specify 4-bromobiphenyl, positional identity, chromatographic assay and relevant unbrominated or multiply brominated related substances.

Packaging and storage

Confirm container compatibility, closure and net weight for the selected grade and destination. Follow the actual supplier SDS and batch label for storage and transport.

Documentation

Request the batch COA, SDS and analytical methods covering the agreed purchasing specification. Confirm which supporting chromatograms and application-specific records are available from the selected manufacturer.

Procurement questions

Is this a brominated biphenyl mixture?

The requested identity is the single para-monobrominated compound.

Why track unbrominated biphenyl?

It lacks the reaction handle and may accompany the desired aromatic product.

Are trace-metal limits always needed?

Set them according to the manufacturing route and final application.

Technical sources
  1. PubChem CAS identity lookupNCBI / PubChem
  2. 4-Bromobiphenyl 281999Sigma-Aldrich