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 Lysylcysteine TFA | 97.8% | 477.38 | 25 MG
Lysylcysteine TFA (L-Lysyl-L-cysteine TFA) is a dipeptide composed of lysine and cysteine, intended for research use only. It is not for human use. This product is provided as a white to off-white solid with a high purity of 97.84% and a molecular weight of 477.38. It is shipped at room temperature in the continental US and requires sealed storage away from moisture.
- High purity: 97.84%
- Molecular weight: 477.38
- Dipeptide composed of lysine and cysteine
- Appearance: White to off-white solid
- Sequence: Lys-Cys
- 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
![Medchemexpress LLC Benzamide, N-(3S)-1-azabicyclo[2.2.2]oct-3-yl-2,5-dimethoxy-, 2,2,2-trifluoroacetate (1:1) | 1336913-03-1 | 99.85% | 404.38 | 1 ML](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000438128-Logo.png-250.jpg){kind=logo}
Medchemexpress LLC Benzamide, N-(3S)-1-azabicyclo[2.2.2]oct-3-yl-2,5-dimethoxy-, 2,2,2-trifluoroacetate (1:1) | 1336913-03-1 | 99.85% | 404.38 | 1 ML
PSEM 89S TFA is a selective and brain-penetrant agonist for ion channels, orthogonally selective for Q79G and L141F. It is intended for research use only.
- Activates layer 2/3 cortical neurons expressing PSAML141F,Y115F-5HT3 high conductance (HC).
- Reversibly silenced transfected neurons by reducing cellular input resistance.
- Strongly reduces photostimulation-evoked feeding in mice expressing PSAML141F,Y115F-glycine receptor (GlyR).
- Shows good brain penetrance in mice after minimally invasive intraperitoneal administration.
- Almost completely suppressed fos in ChR2-expressing neurons in male Agrp-cre mice.
- Rises rapidly in serum and brain, and is mostly cleared from both compartments in 1 hour in C57BL/6 mice.
Medchemexpress LLC JPS014 TFA | 98.12% | C48H60F3N7O9S | 25 MG
JPS014 TFA is a benzamide-based Von Hippel-Lindau (VHL) E3-ligase proteolysis targeting chimera (PROTAC). It degrades class I histone deacetylase (HDAC) and is a potent HDAC1/2 degrader. This degradation correlates with a greater number of total differentially expressed genes and enhanced apoptosis in HCT116 cells.
- Benzamide-based Von Hippel-Lindau (VHL) E3-ligase proteolysis targeting chimera (PROTAC)
- Degrades class I histone deacetylase (HDAC)
- Potent HDAC1/2 degrader
- Correlates with greater total differentially expressed genes
- Enhances apoptosis in HCT116 cells