para-Nitrophenylphosphate

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Para-Nitrophenylphosphate
IUPAC name (4-nitrophenyl) dihydrogen phosphate
Other names pNPP
Identifiers
CAS number [33013-2]
PubChem 378
SMILES C1=CC(=CC=C1[N+](=O)[O-])OP(=O)(O)O
Properties
Molecular formula C6H6NO6P
Molar mass 219.088701
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

para-Nitrophenylphosphate (pNPP) is a chromogenic substrate for acid and alkaline phosphatase in ELISA assays. Under their influence the decay to yellow para-nitrophenol is catalysed. This product can be measured with a 405 nm spectrophotometer.

PNPP \overrightarrow{_{AP}} PNP

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