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 GpTx-1 TFA | 99.6% | 4073.82 | 500 UG
GpTx-1 TFA is a peptide-based NaV1.7 sodium channel antagonist isolated from the venom of the Chilean spider Grammostola porter. It demonstrates potent inhibitory activity against the NaV1.7 channel with an IC50 value of 10 nM.
- Shows excellent selectivity for NaV1.4 and NaV1.5.
- Exhibits greater than 20-fold selectivity for NaV1.4.
- Exhibits greater than 950-fold selectivity for NaV1.5.
Medchemexpress LLC Larllt tfa | 99.9% | 799.88 | 25 MG
LARLLT TFA is an EGFR-binding peptide with potential for research into EGFR overexpressing cancers. This peptide is suitable for studies involving lung, ovarian, and colorectal cancer.
- EGFR-binding peptide
- Potential for research into EGFR overexpressing cancers
- Suitable for lung, ovarian, and colorectal cancer studies
Medchemexpress LLC Maurocalcine TFA | 269745-22-4 | 95.09% | 3858.55 (free base) | 1 MG
Maurocalcine TFA is an agonist of ryanodine receptor (RyR) channel types 1, 2, and 3 with cellular permeability. It induces [3H]ryanodine binding on RyR1 with an EC50 value of 2558 nM and exhibits an apparent affinity of 14 nM for RyR2. This compound can be applied to in vivo cell tracking or other cell imaging techniques. Maurocalcine (100 nM, 24 h) increases the sensitivity of RyR2 to activating [Ca2+]i and decreases its sensitivity to inhibiting [Ca2+]i. Maurocalcine (5 μM, 4 h/24 h) shows no significant cell toxicity for HEK293.
- Agonist of ryanodine receptor (RyR) channel types 1, 2 and 3.
- Possesses cellular permeability.
- Induces [3H]ryanodine binding on RyR1.
- Exhibits affinity for RyR2.
- Can be used for in vivo cell tracking or cell imaging techniques.
Medchemexpress LLC TL033 TFA | 2746343-70-2 | 98.1% | 1630.83 | 5 MG
TL033 TFA (HY-147340A) is a chemical compound with CAS number 2746343-70-2 and a molecular weight of 1630.83. This product is supplied as a light yellow to yellow solid with a high purity of 98.1% (HPLC). It requires specific storage conditions to maintain its integrity, ensuring reliability for research applications.
- CAS number: 2746343-70-2
- Purity (HPLC): 98.1%
- Molecular weight: 1630.83
- Appearance: Light yellow to yellow solid
- Recommended storage (solid): -20°C, sealed, away from moisture and light
- Storage in solvent: -80°C (6 months) or -20°C (1 month), sealed, away from moisture and light
Medchemexpress LLC Imperatoxin A TFA | 98.7% | 3758.35 (free base) | 1 MG
Imperatoxin A TFA is a peptide toxin derived from the venom of the African scorpion Pandinus imperator. It acts as a Ca2+-release channels/ryanodine receptors (RyRs) activator, enhancing the influx of Ca2+ from the sarcoplasmic reticulum into the cell.
- Purity of 98.65%
- Molecular weight of 3758.35 (free base)
- Appearance as a white to off-white solid
- Soluble in H2O at ≥ 100 mg/mL
Medchemexpress LLC Thymocartin TFA 5mg | 5MG
Thymocartin TFA is the TFA salt form of Thymocartin (HY-105025) Thymocartin TFA inhibits apoptosis of peripheral blood lymphocytes in HIV infected individuals Thymocartin TFA is potential for immunodeficiency diseases research[1 [2
Medchemexpress LLC Dendrotoxin-I TFA | 99.9% | 7149.24 | 500 UG
Dendrotoxin-I TFA is a potent K+ channel blocker effective against voltage-gated potassium channel subunits KV1.1, KV1.2, and KV1.6, with IC50s ranging from 0.13-50 nM. This neurotoxin holds potential in cancer research, as demonstrated by its significant tumor growth inhibition effect when combined with hyperthermia in nude mice with MCF-7 cells.
- Potent K+ channel blocker
- Effective against voltage-gated potassium channel subunits KV1.1, KV1.2, and KV1.6
- Exhibits neurotoxic properties
- Potential for use in cancer research
- Demonstrated tumor growth inhibition in in vivo studies
Medchemexpress LLC DOTA-ADIBO TFA | 1374865-01-6 | 99.1% | 776.76 g/mol | C36H43F3N6O10 | 5 MG
DOTA-ADIBO TFA is a DOTA-derived bifunctional chelator supplied as the trifluoroacetic acid salt. It enables biomolecule conjugation via strain-promoted, copper-free azide-alkyne cycloaddition and supports construction of fusion chelator systems for radiometal labeling and PET radiotracer synthesis. The compound is provided as a high-purity solid with DMSO solubility and requires protected, low-temperature storage.
- DOTA-derived bifunctional chelator for copper-free click conjugation.
- Facilitates radiometal labeling for PET radiotracer synthesis.
- High reported purity suitable for research applications.
- Soluble in DMSO (≈100 mg/mL); may require sonication.
- Store under nitrogen, protect from light, keep at low temperatures.
- Provided as a TFA salt to aid handling and stability.
Medchemexpress LLC LP17 TFA (LQVTDSGLYRCVIYHPP TFA) | 99.2% | 1961.24 | 5 MG
LP17 (LQVTDSGLYRCVIYHPP) TFA is a BBB-penetrable triggering receptor expressed on myeloid cells (TREM-1) inhibitory peptide. It substantially alleviates ischemia-induced infarction and neuronal injury by accessing the brain and blocking TREM-1. For research use only.
- Decreases mRNA levels of pro-inflammatory cytokines and chemokines.
- Attenuates extracellular protein levels of IL-1β and IL-18 in a microglia oxygen-glucose deprivation (OGD) model.
- Interacts with microglial SYK.
- Alleviates ischemia-induced infarction and neuronal injury in mice.
- Reduces infarct volume by 27.3%.
- Reduces TUNEL positive cells and FJC positive neurons.
- Rescues neurological deficits and cognitive dysfunction.
- Inhibits microglial M1 polarization and neutrophil infiltration.
Medchemexpress LLC Vm24-toxin (Vaejovis mexicanus peptide 24) | 1373890-79-9 | 3863.59 | 1 MG
Vm24-toxin (Vaejovis mexicanus peptide 24) is a 36-residue peptide that acts as a potent and selective Kv1.3 blocker with a Kd of approximately 3 pM in lymphocytes. It exhibits over 1500-fold higher affinity for Kv1.3 compared to other assayed potassium channels. Vm24-toxin possesses a distorted cystine-stabilized α/β motif, comprising a single-turn α-helix and a three-stranded antiparallel β-sheet, stabilized by four disulfide bridges. This peptide can attenuate the CD4+ effector memory T cell response to T cell receptor (TCR) stimulation.
- Potent and selective Kv1.3 blocker
- High affinity for Kv1.3 over other potassium channels (>1500-fold)
- Attenuates CD4+ effector memory T cell response to T cell receptor (TCR) stimulation
Medchemexpress LLC Saralasin TFA | 34273-10-4 | 99.18% | 1026.07 | 25 MG
Saralasin TFA, an octapeptide analog of angiotensin II, functions as a competitive angiotensin II receptor antagonist and exhibits partial agonist activity. It is utilized in the research of renovascular hypertension and renin-dependent (angiotensinogenic) hypertension.
- Competitive angiotensin II receptor antagonist with a Ki value of 0.32 nM.
- Exhibits partial agonist activity.
- Inhibits cell growth in 3T3 and SV3T3 cells.
- Restores potassium currents in myocytes.
- Inhibits binding of FITC-Ang II to rat liver membrane preparation.
- Reduces ovulation rate and prostaglandin levels in vitro.
- Ameliorates oxidative stress and tissue injury in cerulein-induced pancreatitis in rats.
- Increases serum renin activity in normal, conscious rats.
Medchemexpress LLC Ncgc00138783 tfa | 896700-07-5 | 99.4% | C28H27F4N7O3S | 1 MG
Ncgc00138783 TFA is a selective inhibitor targeting the CD47/SIRPα axis, with an IC50 of 50 μM. It directly blocks the interaction between the CD47 and SIRPα axis.
- Target: CD47/SIRPα axis
- Selective inhibitor
- Blocks CD47/SIRPα interaction
- Molecular weight: 617.62
- Appearance: Solid, white to light yellow
- Purity: 99.4%
- Applications in immunology/inflammation
Medchemexpress LLC c-Myc Peptide TFA | 2918768-02-0 | 99.97% | 1317.32 | 5 MG
c-Myc Peptide TFA is a synthetic peptide that corresponds to the C-terminal amino acids (410-419) of human c-myc protein. It is involved in the regulation of growth-related gene transcription.
- Synthetic peptide corresponding to C-terminal amino acids (410-419) of human c-myc protein.
- Regulates growth-related gene transcription.
- Plays a critical role in the growth of breast cancer cells in vitro.
Medchemexpress LLC Clovibactin TFA | 97.1% | 903.08 (free base) | 500 UG
Clovibactin TFA is the TFA salt form of Clovibactin. It acts as an antibiotic against drug-resistant bacterial pathogens without detectable resistance, functioning by inhibiting cell wall synthesis, specifically targeting pyrophosphate of peptidoglycan precursors.
- Inhibits cell wall synthesis.
- Targets pyrophosphate of peptidoglycan precursors.
- Effective against Staphylococcus strains with MICs of 0.125-2 μg/mL.
- For research use only.
- Molecular weight: 903.08 (free base).
- Formula: C43H70N10O11.xC2HF3O2.
- Appearance: Solid, white to off-white.
- Solubility: DMSO: 100 mg/mL (Need ultrasonic).
Medchemexpress LLC Vh4127 TFA | 1034.35 (free base) | 1 MG
VH4127 TFA is a cyclic peptide that targets the low-density lipoprotein receptor (LDLR) with a KD of 18 nM for hLDLR. It specifically binds to the epidermal growth factor (EGF) homology domain of both rodent and human LDLR.
- Targets low density lipoprotein receptor (LDLR)
- Has a high binding affinity (KD of 18 nM) for human LDLR
- Binds specifically to the EGF homology domain of rodent and human LDLR
- Available in various quantities
- For research use only
- Information on solubility, in vivo dissolution, and related antibodies is also available