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Document set current to 30 July 2026
Defined term · Analytical chemistry

Trifluoroacetate

The counter-ion most commonly introduced by reverse-phase purification with trifluoroacetic acid. Quantified by ion chromatography or fluorine nuclear magnetic resonance, and reported on few…

Document identifier
CEI-GT-139
Series
Defined term
Version
1.0
Published
30 Jul 2026
Last reviewed
30 Jul 2026
Certainty
Not rated

§1Trifluoroacetate

§1.1Also known as

TFA

§1.2Category

Analytical chemistry — Terms describing the determination of identity, purity, content and quality.

§1.3Related terms

  • Counter-ion — The ion paired with a charged peptide, most often trifluoroacetate or acetate from purification. Can constitute a substantial fraction of the mass of a basic peptide and…
Compound Evidence Institute · CEI-GT-139 · https://compoundevidence.com/glossary/trifluoroacetate/ · retrieved 30 July 2026
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