Procurou por: Nicotinic+acid+N-oxide

111 753 resultados encontrados

Filtrar resultados Ordenar por

Sort Results

Visualização em Lista Easy View (new)

Compare(0) Limpar

Classifique os resultados da pesquisa

Nicotinic acid N-oxide ≥98.0% (por análise titulométrica)

Fornecedor: TCI

Descrição: Nicotinic acid N-oxide ≥98.0% (by titrimetric analysis)

Nicotinic acid N-oxide 99%

Fornecedor: Thermo Fisher Scientific

Descrição: CAS No.: 2398-81-4

MSDS

Nicotinamida

Código de Artigo: (ENZOBMLKI2830500)

Fornecedor: ENZO LIFE SCIENCES

Descrição: Nicotinamide, the water-soluble amide of nicotinic acid, is a component of the two most important coenzymes-nicotinamide adenine dinucleotide and nicotinamide adenine dinucleotide phosphate. Nicotinamide is involved in numerous oxidation-reduction reactions in mammalian biological systems acting as an antioxidant.

UOM: 1 * 500 µl

Novo produto Promoção

N/A cada

Human recombinant NAPRTase (from E. coli)

Código de Artigo: (PRSI90-363)

Fornecedor: ProSci Inc.

Descrição: Human nicotinate phosphoribosyltransferase (NAPRTase) is localised in the cytoplasm and is involved in biological processes such as NAD biosynthetic and metabolic processes, nicotinamide metabolic process, nicotinate nucleotide salvage, response to oxidative stress and water-soluble vitamin metabolic process. It functions by catalyzing the conversion of nicotinic acid (NA) to NA mononucleotide (NaMN) and is essential for NA to increase cellular NAD levels and prevent oxidative stress of the cells. It is a crucial factor in the NAD+ biosynthesis pathway. Catalytic activity: Beta-nicotinate D-ribonucleotide + diphosphate = nicotinate + 5-phospho-alpha-D-ribose 1-diphosphate.

UOM: 1 * 50 µG

Promoção

N/A cada

(S)-Cotinine N-Oxide

Código de Artigo: (APOSOR2520-25MG)

Fornecedor: Apollo Scientific

Descrição: A metabolite of nicotine in humans.

UOM: 1 * 25 mg

Promoção

N/A cada

β-Nicotinamida adenina dinucleotídeo (NAD, forma oxidada) ≥98%, pó branco reagente para cultura de célula

Fornecedor: MP Biomedicals

Descrição: Storage: -20°C, desiccate
This is an ultrapure NAD, chromatographically purified to remove trace inhibitors.
β-NAD, a pyridine nucleotide and biologically active form of nicotinic acid, is a coenzyme necessary for the catalytic reaction of certain enzymes. It occurs in living cells primarily in the oxidized state. Serves as a coenzyme of the dehydrogenases, especially in the dehydrogenation of primary and secondary alcohols. NAD usually acts as a hydrogen acceptor, forming NADH which then serves as a hydrogen donor in the respiratory chain.
Many metabolites and enzymes of biological interest are present in tissues at low concentrations. With the use of β-NAD as a catalyst intermediate and several enzymes in a multistep system, known as enzyme cycling, much greater sensitivity for detection of these components is achieved. The reduced form, β-NADH, is fluorescent whereas β-NAD is not. This difference in fluorescence provides a sensitive fluorescent measurement of the oxidized or reduced pyridine nucleotides at concentrations down to 10-7 M.
Electron acceptor. β-NAD is a carrier for hydride ion, forming b-NADH. Hydride ion is enzymatically removed from a substrate molecule by the action of dehydrogenases such as malic dehydrogenase and lactic dehydrogenase. Such enzymes catalyze the reversible transfer of a hydride ion from malate or lactate to b-NAD to form the reduced product, b-NADH. Unlike b-NAD which has no absorbance at 340 nm, b-NADH absorbs at 340 nm (EmM = 6.22). The increase in absorbance at 340 nm with the formation of b-NADH is the basis for measurement of activity of many enzymes.