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Merck

P4744

Phosphatase substrate

chromogenic, powder

Synonym(s):

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

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About This Item

Linear Formula:
O2NC6H4OP(O)(ONa)2 · 6H2O
CAS Number:
333338-18-4
Molecular Weight:
371.14
NACRES:
NA.83
PubChem Substance ID:
24898495
UNSPSC Code:
12352204
EC Number:
224-246-5
MDL number:
MFCD00066288

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Product Name

Phosphatase substrate, powder

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

SMILES string

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

form

powder

solubility

water: 100 mg/mL, clear to slightly hazy

storage temp.

−20°C

Quality Level

200

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Application

Phosphatase substrate has been used as a substrate in tartrate-resistant acid phosphatase (TRAP) assay and alkaline phosphatase (ALP).
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.

Other Notes

Substrate for the determination of acid and alkaline phosphatases.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
SLCG8427
SLBZ6874
SLCC9618
SLBS6000
SLBV3754

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Structure (London, England : 1993), 27(10), 1485-1496 (2019-08-14)
ASPP (apoptosis-stimulating proteins of p53) proteins bind PP-1c (protein phosphatase 1) and regulate p53 impacting cancer cell growth and apoptosis. Here we determine the crystal structure of the oncogenic ASPP protein, iASPP, bound to PP-1c. The structure reveals a 1:1
Elizabeth A Shirtcliff et al.
Proceedings of the National Academy of Sciences of the United States of America, 106(8), 2963-2967 (2009-02-04)
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