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N4505 Sigma

β-Nicotinamide adenine dinucleotide, reduced dipotassium salt

Synonym: β-DPNH, β-NADH, DPNH, Diphosphopyridine nucleotide, reduced form, NADH



Related Categories Biochemicals and Reagents, Bulk vials, Core Bioreagents, NAD(P)(H) and Analogs, NADH,
assay   ≥95%
storage temp.   −20°C
Gene Information   human ... IMPDH2(3615)


Biochem/physiol Actions

Electron donor


1 g in poly bottle

100, 500 mg in poly bottle


β-Nicotinamide adenine dinucleotide (NAD+) and β-Nicotinamide adenine dinucleotide, reduced (NADH) comprise a coenzyme redox pair (NAD+:NADH) involved in a wide range of enzyme catalyzed oxidation reduction reactions. In addition to its redox function, NAD+/NADH is a donor of ADP-ribose units in ADP-ribosylaton (ADP-ribosyltransferases; poly(ADP-ribose) polymerases ) reactions and a precursor of cyclic ADP-ribose (ADP-ribosyl cyclases).

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Celebrate Pi Day!
Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option: http://www.sigmaaldrich.com/catalog/AdvancedSearchPage.do
How do I find price and availability?
There are several ways to find pricing and availability for our products.  Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers. 
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS. To access the shipping information for this material, use the link on the product detail page for the product, or search here. 
What is the absorption maximum and the fluorescence emission maximum wavelengths for Product N4505, β-Nicotinamide adenine dinucleotide, reduced dipotassium salt?
The absorption maximum for NADH is at 340 nm and the fluorescence emission maximum is at 460 nm.
What is the extinction coefficient for Product N4505, β-Nicotinamide adenine dinucleotide, reduced dipotassium salt?
EmM = 6.22 (340 nm) and 14.4 (259 nm, pH 9.5)
What information do you have on the solubility and solution stability of Product N4505, β-Nicotinamide adenine dinucleotide, reduced dipotassium salt?
Solubility and solution stability information can be found on the product information sheet. Here is the link to that document: http://www.sigmaaldrich.com/etc/medialib/docs/Sigma/Product_Information_Sheet/2/n4505pis.Par.0001.File.tmp/n4505pis.pdf
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
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