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Phosphatase substrate

Suitable for manufacturing of diagnostic kits and reagents

4-Nitrophenyl phosphate disodium salt hexahydrate, Phosphatase substrate, pNPP disodium salt hexahydrate
Linear Formula:
O2NC6H4OP(O)(ONa)2 · 6H2O
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


≥97% (HPLC)




water: 100 mg/mL, clear to slightly hazy


diagnostic assay manufacturing

storage temp.


SMILES string




InChI key


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Phosphatase substrate has been used in the chromogenic detection of adsorbed rabbit IgG to determine coating efficiency.
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.


5, 10, 25 g in glass bottle

Other Notes

Substrate for the determination of acid and alkaline phosphatases.

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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Product Information Sheet

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