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N2640

Sigma-Aldrich

4-Nitrophenyl phosphate disodium salt hexahydrate

chromogenic, tablet

Synonym(s):

p-Nitrophenyl phosphate disodium hexahydrate, Disodium 4-nitrophenyl phosphate hexahydrate, di-Sodium 4-nitrophenyl phosphate, pNPP disodium hexahydrate

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About This Item

Linear Formula:
O2NC6H4OP(O)(ONa)2 · 6H2O
CAS Number:
333338-18-4
Molecular Weight:
371.14
Beilstein:
5324661
EC Number:
224-246-5
MDL number:
MFCD00066288
UNSPSC Code:
12352204
PubChem Substance ID:
24897580
NACRES:
NA.83

product name

4-Nitrophenyl phosphate disodium salt hexahydrate, tablet

form

tablet

solubility

water: 1 tablet/3 mL, clear, colorless

storage temp.

−20°C

SMILES string

O.O.O.O.O.O.[Na+].[Na+].[O-][N+](=O)c1ccc(OP([O-])([O-])=O)cc1

InChI

1S/C6H6NO6P.2Na.6H2O/c8-7(9)5-1-3-6(4-2-5)13-14(10,11)12;;;;;;;;/h1-4H,(H2,10,11,12);;;6*1H2/q;2*+1;;;;;;/p-2

InChI key

KAKKHKRHCKCAGH-UHFFFAOYSA-L

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General description

Chromogenic substrate for the determination of acid and alkaline phosphatases. The reaction produces a soluble end product that is yellow in color. The reaction may be stopped with 3 N NaOH and read at 405 nm.

Application

4-Nitrophenyl phosphate disodium salt hexahydrate has been used in enzyme-linked immunosorbent assay (ELISA) as a substrate for streptavidin-Alkaline Phosphatase. It has also been used as a substrate in control assay for comparing 4-aminophenyl phosphate/diethanolamine (APP/DEA) assay for alkaline phosphatase.

Biochem/physiol Actions

4-Nitrophenyl phosphate disodium salt hexahydrate (pNPP) is a non-proteinaceous and non-specific substrate for determining protein tyrosine phosphatase activity. Hydrolysis of pNPP yields p-nitrophenol. pNPP is a common chromogenic substrate for alkaline phosphatase.

Quantity

Contains 15 mg substrate per tablet

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Cytokine, 91, 1-5 (2017)
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Broad-spectrum antiviral drugs are urgently needed to treat individuals infected with new and re-emerging viruses, or with viruses that have developed resistance to antiviral therapies. Mammalian natural host defense peptides (mNHP) are short, usually cationic, peptides that have direct antimicrobial
Protein tyrosine phosphatase assays
Lorenz U
Current Protocols in Immunology, 93(1), 11-17 (2011)
Alkaline Phosphatase Assay Based on the Chromogenic Interaction of Diethanolamine with 4-Aminophenol
Sun J, et al.
Analytical Chemistry, 90(10), 6339-6345 (2018)
Masaya Yokota et al.
Arthritis research & therapy, 16(2), R72-R72 (2014-03-19)
In addition to the pivotal roles of mast cells in allergic diseases, recent data suggest that mast cells play crucial roles in a variety of autoimmune responses. However, their roles in the pathogenesis of autoimmune skeletal muscle diseases have not
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