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HONGKUN / PRODUCT DIRECTORY

Methyl 3-(trifluoromethyl)phenylacetate | CAS 62451-84-7

A meta-CF3 arylacetate with a methylene between ring and ester, used in derivative synthesis where regioisomer identity and intact methyl-ester content are key selection criteria.

CAS62451-84-7
Molecular formulaC10H9F3O2
Molecular weight218.17 g/mol

Product overview

This molecule combines a meta-trifluoromethyl phenyl ring with a CH2COOCH3 side chain. The intervening methylene distinguishes it from methyl trifluoromethylbenzoates and provides a site for alpha functionalization. The methyl ester also differs from the corresponding free phenylacetic acid. Buyers should verify all three structural elements—meta substitution, arylacetate chain and methyl ester—before comparing purity data.

Chemical identity

Chemical name
Methyl 3-(trifluoromethyl)phenylacetate
CAS number
62451-84-7
Molecular formula
C10H9F3O2
Molecular weight
218.17 g/mol

Application context

A published protocol for quaternary ammonium betaine derivatives lists this exact arylacetate among its starting materials. The route develops aryl diazo precursors before the downstream betaine-forming research step. This places the compound in synthetic-method and functional-molecule development as a fluorinated precursor. Procurement specifications should focus on the intended ester and positional isomer, together with hydrolysis-related free acid and any water or residual solvent that matters to the planned alpha-functionalization chemistry.

Chemistry and synthetic role

The CH2 group lies alpha to the ester carbonyl and is bonded to the aromatic ring; CF3 occupies the ring’s meta position.

Quality review

Meta-CF3 identity

Confirm the 3-substituted aromatic pattern and distinguish ortho or para isomers.

Phenylacetate skeleton

Verify the intervening methylene; a benzoate has different connectivity.

Ester integrity

Define ester assay and free-acid, water or residual-solvent criteria suitable for subsequent functionalization.

Preparing a specification

Specify the meta-CF3 phenylacetate methyl ester, regioisomer identity, assay and free-acid or moisture limits required for the chosen derivative route.

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 methyl trifluoromethylbenzoate?

No. It contains an additional methylene between aromatic ring and carbonyl.

Where is the trifluoromethyl group?

At the meta position relative to the phenylacetate side chain.

Is the published betaine application a direct use of this ester?

The ester is a precursor in the reported synthetic sequence, not the final betaine compound.

Technical sources
  1. PubChem CAS identity lookupNCBI / PubChem
  2. Methyl 3-(trifluoromethyl)phenylacetateSynthonix via Sigma-Aldrich
  3. Protocol for aqueous synthesis of bioactive quaternary ammonium betaine derivatives under blue LEDSTAR Protocols / PubMed
  4. Protocol for aqueous synthesis of bioactive quaternary ammonium betaine derivatives under blue LED — full articleSTAR Protocols; repository mirror