Quaternary ammonium salts
Cambridge Isotope Laboratories L-CARNITINE:HCL, O-ACETYL (N-METHYL-D3, 98%), 0.05 G, 1334532-17-0
L-CARNITINE:HCL, O-ACETYL (N-METHYL-D3, 98%), 0.05 G, 1334532-17-0
Apexbio Technology LLC Wright Staining Solution 500ml
Wright Staining Solution composed primarily of eosin and methylene blue is frequently utilized in microscopic examination for differentiation and identification of cell types particularly in hematological analysis Its staining mechanism relies upon the differential affinity of cellular components for acidic and basic dyes eosin an acidic dye stains cytoplasmic granules and erythrocytes pink or orange-red whereas methylene blue a basic dye binds nucleic acids or acidic cellular structures to yield shades of blue or violet In practice mature erythrocytes and eosinophils stain distinctly pink lymphocytes monocytes and basophils appear dark bluish-purple and neutrophils exhibit a pale purple hue due to combined dye affinity Typical usage involves staining thin blood smears or bone marrow aspirates at undiluted formulation to facilitate morphological assessment and differentiation of cell populations
Cayman Chemical cIs-VaccenIc AcId-d13 5mg
An internal standard for the quantification of cis-vaccenic acid by GC- or LC-MS
Medchemexpress LLC Tetramethylammonium hydrogensulfate | 80526-82-5 | MFCD00036149 | >99.0% | 171.22 g/mol | C4H13NO4S | 10 G
Tetramethylammonium hydrogensulfate is a white to off-white solid inorganic salt used as an ion-pairing reagent and general-purpose reagent in analytical and biochemical applications. It has molecular formula C4H13NO4S and a molecular weight of 171.22 g/mol. Available in small-pack sizes for laboratory use.
- White to off-white solid.
- Molecular formula C4H13NO4S.
- Molecular weight 171.22 g/mol.
- CAS number 80526-82-5.
- Available in 10 g, 25 g, 50 g, 100 g, and bulk quantities.
- Product data sheet and SDS are available for handling and safety information.
Medchemexpress LLC Choline bromide | 1927-06-6 | MFCD00054244 | 98.0% | 184.07 | C5H14BrNO | 100 G
Choline bromide is an organic ammonium salt used as a biochemical assay reagent for laboratory research and analytical applications. It is supplied as a solid with reported purity of 98.0% and is intended for research use only; handle and store according to the supplied safety documentation.
- Purity 98.0%.
- Molecular formula C5H14BrNO.
- Molecular weight 184.07 g/mol.
- CAS number 1927-06-6.
- Available as 100 g solid pack.
- Store sealed, away from moisture; store product at 4°C.
Medchemexpress LLC Tetraethylammonium trifluoromethanesulfonate | 35895-69-3 | MFCD00042586 | 98.0% | 279.32 g·mol⁻¹ | C9H20F3NO3S | 1 ML
Tetraethylammonium trifluoromethanesulfonate is a quaternary ammonium salt supplied as a 10 mM solution (one mL) intended for research use. It serves as a convenient source of the tetraethylammonium cation for small-scale experiments, phase-transfer catalysis, and method development in organic synthesis and analytical workflows.
- Supplied as a 10 mM solution in one mL for ready-to-use small-volume experiments.
- High purity (98.0%) suitable for research applications.
- Provides tetraethylammonium cation for phase-transfer catalysis and ion pairing.
- Molecular formula C9H20F3NO3S and molecular weight 279.32 g·mol⁻¹.
- For research use only; not for human or diagnostic use.
Cayman Chemical CholIc AcId nIlIde 25mg
A synthetic bile acid and derivative of cholic acid; inhibits the germination of C. difficile strain R20291 spores in vitro (IC50 = 1.8 μM)