Quaternary ammonium salts
Medchemexpress LLC Tetraethylammonium perchlorate | 2567-83-1 | MFCD00041977 | ≥98.0% | 229.70 g/mol | C8H20ClNO4 | 1 G
Tetraethylammonium perchlorate is a quaternary ammonium salt used as an electrolyte and analytical reagent. It provides the tetraethylammonium cation paired with the perchlorate anion, offering high ionic conductivity and good stability for research and analytical workflows. Common applications include electrochemical studies, battery and fuel cell research, and use as reference standards in chromatography.
- High purity (≥98.0%) suitable for analytical and research use.
- Provides a stable, highly conductive electrolyte for electrochemical studies.
- Compatible with preparation of stock solutions for ion chromatography and other analyses.
- Available in small pack sizes convenient for laboratory experiments.
- Molecular weight 229.70 g/mol and formula C8H20ClNO4 for accurate stoichiometry.
Medchemexpress LLC Tetramethylammonium tetrafluoroborate | 661-36-9 | MFCD00011745 | 98.0% | 160.95 | C4H12BF4N | 25 G
Tetramethylammonium tetrafluoroborate is a quaternary ammonium salt supplied as a white to off-white solid and used as an electrolyte, phase-transfer reagent, and general-purpose reagent in organic and electrochemical research applications.
- High chemical purity suitable for research use.
- Stable tetrafluoroborate counterion for electrochemical applications.
- Available in multiple pack sizes to support different scales of work.
- Solid form that is easy to weigh, handle, and store under standard laboratory conditions.
- Well-known identifiers: molecular weight 160.95, formula C4H12BF4N, CAS 661-36-9.
Medchemexpress LLC Choline bromide | 1927-06-6 | MFCD00054244 | 98.0% | 184.07 g/mol | C5H14BrNO | 25 G
Choline bromide is the bromide salt of choline used as a biochemical reagent and reference standard in life science research. Supplied as a crystalline, water-soluble compound, it is suitable for use in assays, synthesis, and analytical methods where a quaternary ammonium salt is required.
- High purity suitable for research use (98.0%).
- Water-soluble quaternary ammonium compound for biochemical assays.
- Well-characterized: CAS 1927-06-6, formula C5H14BrNO, MW 184.07 g/mol.
- Available in small lab-friendly quantities for convenience.
- Accompanied by datasheet, SDS, and certificate of analysis for traceability.
Medchemexpress LLC Tetrabutylammonium perchlorate | 1923-70-2 | MFCD00038722 | 98.0% | 341.91 g/mol | C16H36ClNO4 | 100 G
Tetrabutylammonium perchlorate is a quaternary ammonium salt supplied as a solid reagent (CAS 1923-70-2). It is commonly used as an electrolyte in electrochemistry, as an ion-pairing reagent in analytical chemistry, and as a reagent in organic synthesis and materials research.
- High purity (98.0%).
- Solid quaternary ammonium salt with good thermal stability.
- Soluble in common organic solvents, suitable for electrochemical electrolytes.
- Useful as a source of perchlorate anion for analytical methods.
- Suitable for organic synthesis, ion-pairing, and materials applications.
Medchemexpress LLC Cholic acid 3-O-glucuronide disodium | 59274-69-0 | 628.66 | C30H46Na2O11 | 1 MG
Cholic acid 3-O-glucuronide disodium is the disodium salt of the 3-O-glucuronide metabolite of cholic acid. It functions as a farnesoid X receptor (FXR) agonist and is used in research on bile acid metabolism and detoxification. Supplied in small milligram quantities, QC reports and a Certificate of Analysis are available on request; intended for laboratory research use only.
- Acts as an FXR agonist for bile acid metabolism studies.
- Supplied as a disodium salt with formula C30H46Na2O11 and molecular weight 628.66.
- Available in small packaging sizes suitable for analytical assays.
- Quality control documentation and CoA available on request.
- For research use only; not for human or clinical use.
![Medchemexpress LLC 2-[2-[[(3R)-1-[8-[(4-tert-butyl-1,3-thiazol-2-yl)carbamoyl]-4-oxo-3-[(E)-2-(2H-tetrazol-5-yl)ethenyl]pyrido... | 957471-96-4 | 99.9% | 693.78 | C31H39N11O6S | 25MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000239474.png-250.jpg)
Medchemexpress LLC 2-[2-[[(3R)-1-[8-[(4-tert-butyl-1,3-thiazol-2-yl)carbamoyl]-4-oxo-3-[(E)-2-(2H-tetrazol-5-yl)ethenyl]pyrido... | 957471-96-4 | 99.9% | 693.78 | C31H39N11O6S | 25MG
D13-9001 is a small-molecule inhibitor of RND-family bacterial efflux pump subunits AcrB (AcrAB-TolC) and MexB (MexAB-OprM). It shows binding affinities (KD ≈ 1.15 μM for AcrB and 3.57 μM for MexB) and is used in microbiology research to study efflux-mediated antibiotic resistance and to potentiate antimicrobial agents in vitro. The compound is supplied as a high-purity solid suitable for biochemical and cellular assays.
- Potent inhibitor of AcrB and MexB efflux pump subunits.
- Measured KD values near 1.15 μM (AcrB) and 3.57 μM (MexB).
- High reported purity suitable for biochemical assays.
- Solid small-molecule formulation amenable to in vitro testing.
- Useful for research on efflux-mediated antibiotic resistance and potentiation assays.
Medchemexpress LLC Benzoylcholine chloride | 2964-09-2 | MFCD00011786 | 98.9% | 243.73 g/mol | C12H18ClNO2 | 5 G
Benzoylcholine chloride is a biochemical reagent supplied as a white to off-white solid for life-science research. It is used as an organic substrate or biological material in biochemical assays and laboratory studies, and is provided in small laboratory pack sizes with defined purity and storage recommendations.
- CAS number 2964-09-2.
- Molecular formula C12H18ClNO2; molecular weight 243.73 g/mol.
- Purity 98.9%.
- Appearance white to off-white solid.
- Storage sealed at 4°C; in solvent: -80°C for up to 6 months, -20°C for up to 1 month.
- Available packaging 5 g, 10 g, 25 g, 50 g.
- Typical use substrate or reagent in biochemical assays and research.
Medchemexpress LLC Choline (bitartrate) (standard) | 87-67-2 | MFCD00036332 | 98.4% | 253.25 g/mol | C9H19NO7 | 100 MG
Choline (bitartrate) (standard) is an analytical reference standard of choline in its bitartrate salt form, provided as a white crystalline powder for laboratory and analytical use. It functions as a methyl donor and precursor to acetylcholine, and is intended for assay calibration, method development, and quality control in research and analytical laboratories. CAS 87-67-2; molecular weight 253.25 g/mol.
- High purity (98.44%) confirmed by Q-NMR.
- Intended for use as an analytical reference standard and assay calibration.
- White crystalline powder form suitable for accurate weighing and dissolution.
- Documented molecular formula and molecular weight for traceable characterization.
- COA and SDS available for batch-specific safety and quality information.
Medchemexpress LLC Choline bitartrate | 87-67-2 | MFCD00036332 | 98.0% | 253.25 g/mol | C9H19NO7 | 1 ML
Choline bitartrate is a research-grade methyl donor and precursor to the neurotransmitter acetylcholine, supplied as a ready-to-use 10 mM solution (1 mL) in DMSO. It is used in biochemical and cellular studies involving lipid metabolism, one-carbon/methylation pathways, and neurotransmission. CAS 87-67-2; typical purity 98.0%.
- Prepared 10 mM solution for convenient dosing and reduced prep time.
- High purity for reproducible experimental results.
- Supplied in DMSO for compatibility with common assay systems.
- Useful as a methyl donor in metabolic and epigenetic studies.
- Acts as a precursor to acetylcholine for neurotransmission research.
![eMolecules 1643-19-2 | Tetrabutylammonium (bromide) | ChemScene | MFCD00011633 | 322.375 | C16H36BrN | 97.000 | [Br-].CCCC[N+](CCCC)(CCCC)CCCC | 100g | 866871524](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000217180.jpg-250.jpg)
eMolecules 1643-19-2 | Tetrabutylammonium (bromide) | ChemScene | MFCD00011633 | 322.375 | C16H36BrN | 97.000 | [Br-].CCCC[N+](CCCC)(CCCC)CCCC | 100g | 866871524
Tetrabutylammonium (bromide) | ChemScene | 1643-19-2 | MFCD00011633 | 322.375 | C16H36BrN | 97.000 | [Br-].CCCC[N+](CCCC)(CCCC)CCCC | 100g | 866871524
![eMolecules 56-34-8 | Tetraethylammonium (chloride) | ChemScene | MFCD00011828 | 165.710 | C8H20ClN | 98.000 | [Cl-].CC[N+](CC)(CC)CC | 500g | 572166017](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000217360.jpg-250.jpg)
eMolecules 56-34-8 | Tetraethylammonium (chloride) | ChemScene | MFCD00011828 | 165.710 | C8H20ClN | 98.000 | [Cl-].CC[N+](CC)(CC)CC | 500g | 572166017
Tetraethylammonium (chloride) | ChemScene | 56-34-8 | MFCD00011828 | 165.710 | C8H20ClN | 98.000 | [Cl-].CC[N+](CC)(CC)CC | 500g | 572166017
Medchemexpress LLC Choline (bitartrate) | 87-67-2 | MFCD31726185 | 98.4% | 253.25 g/mol | C9H19NO7 | 10 MG
Choline (bitartrate) is an analytical reference standard of choline supplied as a white to off-white solid and intended for research and analytical applications such as calibration, method development, and quality control. It has a molecular weight of 253.25 g/mol and is provided with supporting documentation for safe and consistent use.
- High purity suitable for analytical use.
- White to off-white solid physical form.
- Available in small quantities for trace-level calibration.
- Includes certificate of analysis and safety data sheet.
- Suitable for method development and quality control.