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P5994 Sigma

Phosphatase substrate

40 mg tablets

Synonym: 4-Nitrophenyl phosphate disodium salt hexahydrate, pNPP disodium salt hexahydrate

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Properties

Related Categories 3.x.x.x Hydrolases, p-Nitrophenyl Phosphate Substrate Systems, Biochemicals and Reagents, Colorimetric, Detection,
InChI Key   KAKKHKRHCKCAGH-UHFFFAOYSA-L
concentration   36 - 44 mg/tablet
impurities   p-nitrophenol, essentially free
solubility   H2O: soluble, clear, colorless to yellow (1 tablet in 8 mL of water.)
storage temp.   −20°C

Description

Application

Chromogenic substrate for use with alkaline and acid phosphatase ELISA procedures. Produces a soluble end product that is yellow in color and can be read spectrophotometrically at 405 nm. The pNPP reaction may be stopped with 3 N NaOH and read at 405 nm.

Phosphatase is a chromogenic substrate for use with alkaline and acid phosphatase ELISA procedures. It is been used for the colorimetric detection of CTB fusion proteins. Produces a soluble end product that is yellow in color and can be read spectrophotometrically at 405 nm. The pNPP reaction may be stopped with 3 N NaOH and read at 405 nm.

The substrate has been used to determine the alkaline phosphatase (ALP) activity in human osteoblast-like Saos-2 cell lysates. ALP acts as an early marker of osteoblast differentiation that is expressed just before matrix mineralization begins.

Other Notes

Substrate for the determination of acid and alkaline phosphatases.

Packaging

25 tablets in glass bottle

Preparation Note

Dissolve tablets to the desired concentration in either of the following buffers: 0.1 M glycine, pH 10.4, with 1 mM MgCl2 and 1 mM ZnCl2 or 1 M diethanolamine, pH 9.8, with 0.5 mM MgCl2. Typically, a pNPP concentration of 1 mg/mL is used.

Quantity

Contains 40 mg substrate per tablet

Price and Availability


Biomedical Applications
Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
3
Protocols & Articles

Articles

Colorimetric Alkaline Phosphatase and Peroxidase Substrate Detection Systems

Nitroblue Tetrazolium (NBT) is used with the alkaline phosphatase substrate 5-Bromo- 4-Chloro-3-Indolyl Phosphate (BCIP) in western blotting and immunohistological staining procedures. These substrat...
BioFiles 2008, 3.4, 6.
Keywords: Applications, Enzyme-linked immunosorbent assay, Formulations, Immunohistochemistry, Western blot

Related Content

Enzymes & Proteins

Application Index | Enzyme Index | Substrate Index | Inhibitor Index | Cofactor Index | Lectin Index
Keywords: Cell signaling, Diagnostic, Drug discovery, Molecular biology

Peer-Reviewed Papers
15

References

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92210 Timestrip Plus 0 °C
06693 Timestrip Plus -20 °C

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