5668 Results for: "kwas+stearynowy"

Supplier: Merck

Methanolic HCl (hydrogen chloride in methanol) is particularly useful for preparing methyl esters of volatile (short chain) fatty acids. Fatty acids are esterified by heating them with an anhydrous alcohol in the presence of an acidic catalyst in a sealed vessel at a high temperature for a short time. In the reaction, a fatty acid molecule and an alcohol molecule are joined, with the release of a water molecule. The derivatives can be quickly and easily recovered, quantitatively, from the reaction medium.

Supplier: Thermo Fisher Scientific

Thermo Scientific Pierce Ellman's Reagent (DTNB) reacts with sulfhydryl groups to yield a colored product, providing a reliable method to measure reduced cysteines and other free sulfhydryls in solution.

Supplier: LGC Standards PROMOCHEM

3,4-Dimethoxybenzoic acid

Supplier: Merck

, LiChrosolv® for liquid chromatography, Supelco®

Supplier: Merck

(1S)-(+)-Camphor-10-sulphonic acid, Sigma-Aldrich®

Supplier: Honeywell Chemicals

EGTA (ethylene glycol bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid) ≥98.0% (by titrimetric analysis) for complexometry, Fluka™

Supplier: Merck

trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid monohydrate, Sigma-Aldrich®

Supplier: Thermo Fisher Scientific

β-(N-Morpholino)ethanesulphonic acid (MES) monohydrate ≥98.5% (dry basis), Ultrapure

Supplier: G-Biosciences

Ellman's reagent is a versatile, water-soluble compound for quantifying free sulfhydryl groups in solution. It reacts with a free sulfhydryl group to yield a mixed disulfide and 2-nitro-5-thiobenzoic acid (NTB), a measurable yellow colored product at 412nm.
Ellman's reagent is very useful as a free sulfhydryl assay reagent due to its high specificity for -SH groups at neutral pH, high molar extinction coefficient and short reaction time.

Supplier: MP Biomedicals

Citric acid acts as an iron chelator. It can support cholesterol/sterol, ubiquinone and isoprenoid biosynthesis in cell culture applications. In animals, citric acid improves the utilization of nutritional calcium. It is a useful buffer component.

Supplier: Apollo Scientific

(3-Chlorophenoxy)acetic acid

Supplier: Merck

EGTA (ethylene glycol bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid), Sigma-Aldrich®

Supplier: Merck

EGTA (ethylene glycol bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid), Sigma-Aldrich®

Supplier: Merck

EGTA (ethylene glycol bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid), Sigma-Aldrich®

Supplier: MP Biomedicals

2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid is a useful indicator for calcium titrations with EDTA in the presence of magnesium.

Supplier: Thermo Fisher Scientific

EGTA (ethylene glycol bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid) 0.5 M in aqueous solution, autoclaved pH 8.0

Supplier: Thermo Fisher Scientific

trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid monohydrate 98%

Supplier: VWR Chemicals

Hepes is a widely used buffer in biological studies. In cell culture media, it is employed as a substitute for the bicarbonate buffer at a concentration of 25 mM or as a supplement to the bicarbonate buffer (concentration 10 to 15 mM).

Supplier: Merck

LiChrosolv® hypergrade is accurately tested for LC-MS suitability, meeting all the requirements of modern LC-MS ionisation methods (ESI / APCI - positive and negative mode).

Supplier: Merck

Soluble in water and mineral acids; insoluble in organic solvents. In aqueous solutions forms pyrrolidonecarboxylic acid slowly at room temperature, more rapidly at 100 °C.

Supplier: MP Biomedicals

Lactic acid is fermentation acid from milk or carbohydrates. It occurs in the blood and muscle fluid of man and animals. The lactic acid concentration increases in muscle and blood after vigorous activity. It is also present in other organs including liver, kidney, and thymus gland, and other body fluids including amniotic fluid.

Supplier: Avantor

Ultra-clean, PP columns with BAKERBOND® HPLC media are engineered to save time, minimise work and final solvent volumes and improve performance. Run times are up to nine times faster than conventional columns. The built-in column guard filter and higher analyte concentration may reduce or eliminate pre-filtration and concentration steps.

Supplier: Apollo Scientific

2,4-Dimethylphenylacetic acid 98%

Supplier: VWR Chemicals

Trichloroacetic acid glacial Ph. Eur.

Supplier: Merck

(1R)-(-)-Camphor-10-sulphonic acid, Sigma-Aldrich®

Supplier: Merck

(1R)-(-)-Camphor-10-sulphonic acid, Sigma-Aldrich®

Supplier: Avantor

Suitable for use in biopharmaceutical manufacturing applications.

Supplier: MP Biomedicals

HEPES is a zwitterionic organic chemical buffering agent; one of the twelve Good's buffers.

Supplier: Avantor

The J.T.Baker® BAKERBOND® PolyABx multimode ion exchange (IEX) chromatography resin functions as a weak cation exchange resin with improved selectivity for superior separation in process chromatography applications.

Supplier: MP Biomedicals

Trichloroacetic acid is used in protein precipitation; has been used to determine protein concentration by quantitative precipitation. Used as a decalcifier and fixative in microscopy. A protocol for the precipitation of nucleic acids can be found in Molecular Cloning.
Stability: Long term storage of aqueous solutions of less than 30% strength is not recommended. Decomposition products are chloroform, hydrochloric acid, carbon dioxide and carbon monoxide. Chloride ≤0.001% ; Nitrate ≤0.002%; Phosphate ≤5 ppm; Sulfate ≤0.02%