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Product Image-VWRC0664-2.5KG

DL-Malic acid 99-100.5%, high purity

Catalog Number: (VWRC0664-2.5KG)
Supplier: VWR Chemicals
Description: DL-Malic acid 99-100.5%, high purity
UOM: 1 * 2,5 kg

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Image Unavailable-ALFAA11688.14

D-(+)-Malic acid ≥98%

Supplier: Thermo Scientific
Description: D-(+)-Malic acid ≥98%

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Product Image-VWRC20365.290

DL-Malic acid ≥99%, TECHNICAL

Catalog Number: (VWRC20365.290)
Supplier: VWR Chemicals
Description: DL-Malic acid ≥99%, TECHNICAL
UOM: 1 * 1 kg

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Image Unavailable-ALFAA13702.22

L(-)-Malic acid ≥97%

Supplier: Thermo Scientific
Description: L(-)-Malic acid ≥97%

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Image Unavailable-ALFAJ63221.22

L(-)-Malic acid ≥99%

Supplier: Thermo Scientific
Description: L(-)-Malic acid ≥99%

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Image Unavailable-ALFAJ18700.A1

L(-)-Malic acid 99+% (by GC)

Supplier: Thermo Scientific
Description: L(-)-Malic acid 99+% (by GC)

Image Unavailable-ALFAA17874.0E

DL-Malic acid ≥98%

Supplier: Thermo Scientific
Description: DL-Malic acid ≥98%

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Image Unavailable-ALFAA19428.18

DL-Malic acid monosodium salt ≥98%

Supplier: Thermo Scientific
Description: DL-Malic acid monosodium salt ≥98%

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Image Unavailable-SAFA112577-100G

L(-)-Malic acid, Sigma-Aldrich®

Catalog Number: (SAFA112577-100G)
Supplier: Merck
Supplier Article Number:: 112577-100G
Description: L(-)-Malic acid, Sigma-Aldrich®
UOM: 1 * 100 g
Image Unavailable-EDQMY0000143

DL-Malic acid

Catalog Number: (EDQMY0000143)
Supplier: EDQM
Supplier Article Number:: Y0000143
Description: DL-Malic acid
UOM: 1 * 1 items
Image Unavailable-ICNA0210223790

L(-)-Malic acid ≥99%, powder

Supplier: MP Biomedicals
Description: L-Malic Acid is a dicarboxylic acid that is made by all living organisms. The malate anion is an intermediate in the citric acid cycle.

Image Unavailable-ALFA44366.09

(-)-O-Acetyl-L-malic anhydride ≥98%

Supplier: Thermo Scientific
Description: (-)-O-Acetyl-L-malic anhydride ≥98%

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Image Unavailable-ALFA45396.4I

Malic enzyme

Catalog Number: (ALFA45396.4I)
Supplier: Thermo Scientific
Supplier Article Number:: 45396.4I
Description: Malic enzyme
UOM: 1 * 1 KU

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Image Unavailable-ICNA02194714.5

β-Nicotinamide adenine dinucleotid, oxidised form (NAD, oxidised form) ≥98%, white powder cell culture reagent

Supplier: MP Biomedicals
Description: 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.

Product Image-VWRC86139.310

Acetic acid 2%, VOLUSOL®

Catalog Number: (VWRC86139.310)
Supplier: VWR Chemicals
Description: Acetic acid 2%, VOLUSOL®
UOM: 1 * 1 L

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Product Image-VWRC0143-100G

L(+)-Ascorbic acid free acid ≥99% ACS

Supplier: VWR Chemicals
Description: L(+)-Ascorbic acid free acid ≥99% ACS

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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at +65 6505 0760.
This product is marked as restricted and can only be purchased by approved Shipping Accounts. If you need further assistance, email VWR at sales@sg.vwr.com
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