5667 Results for: "Kwas+ortofosforowy(V)"

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: 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: Merck

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

Supplier: Cayman Chemical

Saturated fatty acids are synthesised by both plants and animals from acetyl coenzyme A as a form of long-term energy storage. Palmitic acid is a common 16-carbon saturated fat that represents 10-20% of the normal human dietary fat intake, and approximately 25% of the total plasma fatty acids in plasma lipoproteins. Saturated free fatty acids induce the expression of cyclooxygenase-2. Palmitic acid methyl ester (MP) is a fatty acid ester whose concentration in cells is modulated by methanol. In studies with isolated Kupffer cells, MP inhibits phagocytosis and decreases cell viability. In cells treated with lipopolysaccharide, it also decreases secretion of interleukin-10, TNF-α, nitric oxide, and prostaglandin E2. This effect is thought to occur by the inhibition of NF-κB.

Supplier: Merck

, LiChrosolv® for liquid chromatography, Supelco®

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: LGC Standards PROMOCHEM

3,4-Dimethoxybenzoic acid

Supplier: Merck

Titriplex® IV (trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid monohydrate) analytical reagent, Supelco®

Supplier: Thermo Fisher Scientific

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

Supplier: Merck

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

Supplier: Molekula

(1R)-(-)-Camphor-10-sulphonic acid

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: 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: Avantor

Suitable for use in biopharmaceutical manufacturing applications.

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: 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%

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: VWR Chemicals

Trichloroacetic acid glacial Ph. Eur.

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: 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: 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: 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: Merck

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

Supplier: MERCK PRODUCTION CHEMICALS

2-Morpholinoethanesulfonic acid monohydrate (MES) is suitable for biopharmaceutical production EMPROVE® bio.

Supplier: MP Biomedicals

PIPES is a zwitterionic N-substituted aminosulfonic acid "Good" buffer. Buffers can be made by adding a solution of base to PIPES free acid, titrating to the appropriate pH, or by mixing equimolar solutions of the sesquisodium salt and the disodium salt or dipotassium salt, titrating to the appropriate pH.

Supplier: Corning

HEPES (N-2-hydroxyethylpiperazine-N’-2-ethanesulphonic acid) provides an alternative to the use of bicarbonate for buffering because it does not require elevated levels of CO₂