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HONGKUN / PRODUCT DIRECTORY

2-Bromo-5-fluorobenzotrifluoride | CAS 40161-55-5

An aryl bromide combining ring fluorine and an ortho trifluoromethyl group, documented as an entry material for substituted benzoic-acid chemistry where positional identity and compatibility with organometallic processing guide qualification.

CAS40161-55-5
Molecular formulaC7H3BrF4
Molecular weight243.00 g/mol

Product overview

The alternative name 1-bromo-4-fluoro-2-(trifluoromethyl)benzene makes the substitution pattern especially clear: fluorine is para to bromine, and CF3 is ortho to it. The benzotrifluoride-based name describes the same molecule with a different numbering origin. This combination provides a brominated aromatic entry point while retaining two different fluorine environments in the scaffold. A published patent uses the compound to access a fluorotrifluoromethylbenzoic acid before further transformations. Procurement should establish the correct ring positions and distinguish other bromofluorobenzotrifluoride isomers. For use in the documented organometallic chemistry, water and other protic contamination are practical questions to agree with the receiving process.

Chemical identity

Chemical name
2-Bromo-5-fluorobenzotrifluoride
CAS number
40161-55-5
Molecular formula
C7H3BrF4
Molecular weight
243.00 g/mol

Application context

A published route to 4-amino-2-(trifluoromethyl)benzonitrile starts from this aryl bromide. Organometallic formation and carboxylation at the bromine-bearing site first give a substituted benzoic acid. Specify the bromine, ring-fluorine and CF3 positions together, with quantitative assay and water or other protic-contaminant criteria appropriate to that entry step. A total-halogen result does not resolve positional isomers.

Chemistry and synthetic role

The cited route uses the aryl bromide as the organometallic entry handle. Ring-bound F and CF3 remain different structural features. Subsequent functional-group changes follow the selected route.

Quality review

Map the three substituents

Confirm the 1-bromo/4-fluoro/2-CF3 arrangement; alternative numbering should resolve to the same structure.

Evaluate water for organometallic use

Set a water test and discuss other protic contaminants with the receiving process rather than assuming an anhydrous grade.

Resolve bromofluoro regioisomers

Agree a chromatographic method capable of distinguishing relevant positional isomers and source-related aromatic precursors.

Preparing a specification

Provide both CAS and the 1-bromo-4-fluoro-2-CF3 structure, assay basis and positional-isomer limits. State whether organometallic processing drives water or residual-solvent criteria, and agree the corresponding methods.

Packaging and storage

Confirm packaging format, net weight and transport arrangements for the selected grade, order quantity and destination. Request the applicable SDS and label to establish storage and handling conditions.

Documentation

Request the proposed specification, batch COA and current SDS. Confirm availability of the identity data and analytical methods relevant to the checks above; documents depend on the selected manufacturer and grade.

Procurement questions

Do the two numbering-based names identify one compound?

Yes. 2-Bromo-5-fluorobenzotrifluoride is 1-bromo-4-fluoro-2-(trifluoromethyl)benzene.

Which identity details matter for the organometallic entry step?

Confirm the bromine, ring-fluorine and CF3 positions, and agree assay plus water or other protic-contaminant controls for the receiving reaction.

Why specify water in an enquiry?

It can be relevant to the documented organometallic entry step; the required level depends on the receiving process.

Technical sources
  1. PubChem CID 520983 — identity property recordNCBI / PubChem
  2. 2-Bromo-5-fluorobenzotrifluoride B2800Tokyo Chemical Industry
  3. CN111072517B — Preparation method of 4-amino-2-trifluoromethyl benzonitrileChina National Intellectual Property Administration