Trifluoroacetic Acid
Trifluoroacetic acid is a corrosive organofluorine compound that is structurally analogous to, but stronger than, acetic acid. Available in various quantities and reagent grades, it is used in NMR spectroscopy, mass spectrometry, organic synthesis, etc.
Almost 100,000-fold more acidic than acetic acid, TFA is widely used in organic chemistry. TFA is used as a reagent in organic synthesis because of its properties: volatility, organic solvent solubility, and acidic strength. It is less oxidizing than sulfuric acid and is more readily available in its anhydrous form than some other acids . Other features include:
- Used in acid-catalyzed reactions, especially peptide synthesis (to cleave esters)
- Dissolves protein when mixed with liquid SO2
- Removes t-butyl derived side-chain protecting groups in Fmoc peptide synthesis
- Can remove the t-butoxycarbonyl protecting group in organic synthesis
- At low concentrations, acts as an ion-pairing agent for peptides and small proteins in organic compound liquid chromatography
- For acid-stable materials, can be a solvent for NMR spectroscopy
- Acts as a calibrant in mass spectrometry
- Used to produce trifluoroacetate salts
- An ingredient in adhesives, sealants, paints, and coatings
When TFA combines with bases and metals, especially light metals, a strong exothermic reaction occurs. When mixed with lithium aluminum hydride (LAH), the reaction is explosive.
Although nonflammable, TFA is corrosive to skin, eyes, and mucous membranes and requires careful use and handling. It is harmful when inhaled, causes severe skin burns and eye damage, and is toxic to aquatic organisms at even low concentrations.
TFA is also a product of the metabolic breakdown of the anesthetic agent halothane. It is the suspected cause of halothane-induced hepatitis.
Medchemexpress LLC Pf15 TFA | 99.7% | 969.97 | C46H50F3N13O8 | 5 MG
A heterobifunctional PROTAC that recruits cereblon to promote degradation of FLT3-ITD. It reduces FLT3 and STAT5 phosphorylation, inhibits proliferation of FLT3-ITD-positive cells, and shows tumor growth inhibition in preclinical models. Supplied as a trifluoroacetic acid salt for laboratory research.
Medchemexpress LLC NLS-StAx-h TFA | 98.9% | 3559.28 | 1 MG
NLS-StAx-h TFA is a selective, cell permeable, stapled peptide that inhibits Wnt signaling, with an IC50 of 1.4 μM. It effectively inhibits interactions between β-catenin and transcription factors and demonstrates anti-proliferative effects on cancer cells, including SW-480 and DLD-1 colorectal cancer cells.
- Selective, cell permeable, stapled peptide
- Inhibits Wnt signaling with an IC50 of 1.4 μM
- Efficiently inhibits β-catenin-transcription factor interactions
- Shows anti-proliferation of cancer cells
- Inhibits proliferation of colorectal cancer cells (SW-480 and DLD-1 cells) by more than 80% at 10 μM
- Inhibits migration of DLD-1 colorectal cancer cells in a dose-dependent manner
Medchemexpress LLC Clovibactin TFA | 97.1% | 903.08 | 100 UG
Clovibactin TFA is the TFA salt form of Clovibactin. It is an antibiotic effective against drug-resistant bacterial pathogens without detectable resistance. Clovibactin TFA inhibits cell wall synthesis by targeting pyrophosphate of peptidoglycan precursors.
- Effective against drug-resistant bacterial pathogens
- Exhibits no detectable resistance
- Inhibits cell wall synthesis
- Targets pyrophosphate of peptidoglycan precursors
Medchemexpress LLC Charybdotoxin (TFA) | 96.8% | 4295.89 (free acid) | 500 UG
Charybdotoxin (TFA) is a research-grade peptide supplied as a white to off-white solid. It has a molecular weight of 4295.89 (free acid) and a purity of 96.8% as determined by LCMS. This substance is intended for laboratory use and substance manufacturing, offering stability under recommended storage conditions.
- Supplied as a white to off-white solid
- Purity of 96.8% (LCMS)
- Molecular weight of 4295.89 (free acid)
- Suitable for use as laboratory chemical and for substance manufacturing
- Stable under recommended storage conditions
- Store powder at -80°C for 2 years or -20°C for 1 year
- Store in solvent at -80°C for 6 months or -20°C for 1 month
Medchemexpress LLC L-Tyrosine, L-tyrosyl-L-lysyl-L-tyrosyl- (TFA) | 98.1% | 749.73 | 5 MG
YKYY TFA is a blood pressure-lowering peptide isolated from the digest of Undaria pinnatifida. This peptide acts as an angiotensin I-converting enzyme (ACE) inhibitor with an IC50 of 64.2 μM. It is suitable for use in hypertension research.
- Antihypertensive peptide
- Angiotensin I-converting enzyme (ACE) inhibitor
- Isolated from the peptic digest of wakame Undaria pinnatifida
- For research use only
Medchemexpress LLC T-Boc-Met-Asp-Gly-Cys-Glu-Leu | 99.2% | 880.90 | 1 MG
Box5 TFA is a potent Wnt5a antagonist. It inhibits Wnt5a signaling and Wnt5a-mediated Ca2+ release, and also inhibits cell migration. It has the potential for the research of melanoma.
- In vitro: decreases the expression of rWnt5a (0.1 μg/mL) stimulated p-MARCKS in A2058 cells.
Medchemexpress LLC BRP TFA (BRINP2-related peptide TFA) | 1540.88 (free base) | 1 MG
BRP (BRINP2-related peptide) TFA possesses anti-obesity activity via FOS activation. This peptide activates FOS in the central nervous system and acts independently of leptin, GLP-1 receptor, and melanocortin 4 receptor. It is intended for research use only.
- Anti-obesity activity
- FOS activation
- Activates FOS in the central nervous system
- Acts independently of leptin
- Acts independently of GLP-1 receptor
- Acts independently of melanocortin 4 receptor
Medchemexpress LLC Pep42 TFA | 99.6% | 1335.59 | 25 MG
Pep42 TFA is a cyclic peptide ligand of GPR78. It internalizes selectively into highly metastatic human melanoma cells through a receptor-mediated process. This product is for research use only.
- Cyclic peptide ligand of GPR78
- Internalizes selectively into highly metastatic human melanoma cells
- Receptor-mediated process
- Sequence: Cys-Thr-Val-Ala-Leu-Pro-Gly-Gly-Tyr-Val-Arg-Val-Cys (disulfide:Cys1-Cys13)
- Target: Others
- Pathway: Others
- Storage for powder: -80°C for 2 years, -20°C for 1 year
- Storage in solvent: -80°C for 6 months, -20°C for 1 month (sealed storage, away from moisture)
- Appearance: Solid
- Stable under recommended storage conditions
- Identified uses: Laboratory chemicals, manufacture of substances
Medchemexpress LLC Lys-CoA TFA (Lys-coenzyme A) | 98.5% | 1 MG
Lys-CoA TFA is a selective p300 histone acetyltransferase (HAT) inhibitor with an IC50 of 50-500 nM. It demonstrates over 100-fold selectivity for p300 compared to PCAF (IC50=200 μM). This compound works by inhibiting p300 HAT activity-dependent transcriptional activation.
- Selective p300 histone acetyltransferase (HAT) inhibitor
- IC50 of 50-500 nM for p300
- Over 100-fold selectivity for p300 compared to PCAF
- Induces a senescent phenotype in human normal melanocytes at 0.1 and 1 mM concentrations
- Inhibits cyclin E expression in a dose-dependent manner
Medchemexpress LLC Ezm0414 Tfa | 2411759-92-5 | 95.5% | 514.51 | 25 MG
EZM0414 TFA is the trifluoroacetate salt form of EZM0414. It functions as a potent, selective, and orally active inhibitor of SETD2, making it suitable for research applications. This compound is being investigated for its potential in treating relapsed or refractory multiple myeloma and diffuse large B-cell lymphoma.
- TFA salt form of EZM0414.
- Potent, selective, orally active SETD2 inhibitor.
- IC50 of 18 nM in biochemical assay.
- IC50 of 34 nM in cellular assay.
- Appearance is solid, white to light yellow.
- Store at 4°C, sealed, away from moisture.
- When in solvent, store at -80°C for 2 years or -20°C for 1 year, sealed and away from moisture.
Sigma Aldrich Fine Chemicals Biosciences Trifluoroacetic acid puriss. p.a., for HPLC, 99.0 (GC), 76-05-1, MFCD00004169
Trifluoroacetic acid puriss. p.a., for HPLC, 99.0 (GC)
Medchemexpress LLC OS-2966 10mg | 10mg
OS-2966 is a humanized antibody expressed in CHO cells targeting Integrin b1/ITGB1/CD29 OS-2966 carries a huIgG1 type heavy chain and a hu type light chain with a predicted molecular weight (MW) of 145 5 kDa The isotype control for OS-2966 can be referenced as Human IgG1 kappa Isotype Control (HY-P99001)
Medchemexpress LLC MC-VC-PAB-NH2 trifluoroacetic acid | 1616727-21-9 | 99.9% | C33H47F3N8O10 | 10MG
MC-VC-PAB-NH2 TFA is a cleavable ADC linker supplied as the trifluoroacetic acid salt for research use. It contains a Val-Cit-PAB cleavable spacer designed for protease-triggered drug release and is provided as a white to off-white solid with high purity.
- Provides a protease-cleavable Val-Cit-PAB spacer for controlled payload release.
- Supplied as a TFA salt to aid handling and stability.
- High purity (≈99.9%) suitable for conjugation workflows.
- Soluble in DMSO at high concentration (100 mg/mL) with ultrasonic assistance.
- Solid, white to off-white appearance for convenient storage and handling.
- Storage recommendations: sealed, away from moisture and light; in solvent: -80°C (6 months), -20°C (1 month).
- Intended for research use only; not for human or clinical use.