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Merck

N1891

p-Nitrophenyl phosphate

SIGMAFAST™, chromogenic, tablet

Synonym(s):

pNPP tablets

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About This Item

UNSPSC Code:
12352204
NACRES:
NA.83
MDL number:
MFCD00284586

Key Documents

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Product Name

SIGMAFAST™ p-Nitrophenyl phosphate Tablets, tablet, To prepare 5 mL

form

tablet

solubility

deionized water: soluble 5 mL

storage temp.

−20°C

Quality Level

200

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Application

Developed for use as a soluble substrate for the detection of alkaline phosphatase activity in Enzyme Immunoassays (EIA). pNPP is the substrate of choice in high sensitivity alkaline phosphatase-based EIA assays.One pNPP tablet and one Tris buffer tablet are dissolved in deionized water and provide a ready-to-use substrate. Each SIGMAFAST pNPP tablet set yields a solution containing 1.0 mg/ml pNPP, 0.2 M Tris buffer. EIA applications using pNPP may be read in timed assays or stopped with 3N NaOH for delayed readings. SIGMAFAST™ require only the addition of distilled or deionized water to prepare an active substrate solution. Tablets are individually packaged in foil packets.
SIGMA FAST p-Nitrophenyl phosphate Tablets has been used:
  • to quantify non-secreted alkaline phosphatase to monitor differentiation of osteoblast-like cells (SaoS-2)
  • to stain murine preosteoblast MC3T3-E1 cells in alkaline phosphatase assay
  • as a substrate for ExtrAvidin® alkaline phosphatase to measure hemoglobin-bound α-synuclein using enzyme-linked immunosorbent assay (ELISA)
  • as a substrate for alkaline phosphatase conjugated antibodies for detection in ELISA of abirin toxin

Preparation Note

Each tablet set dissolved in 5 mL deionized water yields a ready-to-use buffered solution containing pNPP.

Legal Information

ExtrAvidin is a registered trademark of Merck KGaA, Darmstadt, Germany
SIGMAFAST is a trademark of Sigma-Aldrich Co. LLC

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

N1891-BULK: + N1891-VAR: + N1891-5SET: + N1891-50SET:

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Certificates of Analysis (COA)

Lot/Batch Number
0000479067
0000479067
0000479066
0000479066
0000467673

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Ruklanthi de Alwis et al.
The Journal of infectious diseases, 219(2), 295-304 (2018-10-16)
Nontyphoidal Salmonella (NTS) organisms are a major cause of gastroenteritis and bacteremia, but little is known about maternally acquired immunity and natural exposure in infant populations residing in areas where NTS disease is highly endemic. We recruited 503 pregnant mothers
Conall H Watson et al.
PLoS neglected tropical diseases, 11(7), e0005786-e0005786 (2017-07-21)
Fiji, an upper-middle income state in the Pacific Ocean, has experienced an increase in confirmed case notifications of enteric fever caused by Salmonella enterica serovar Typhi (S. Typhi). To characterize the epidemiology of typhoid exposure, we conducted a cross-sectional sero-epidemiological
Zimu Wu et al.
International journal of clinical and experimental pathology, 12(5), 1757-1763 (2020-01-15)
Post-stroke induction of alpha-synuclein (AS), a neuronal protein implicated in the pathogenesis of Parkinson's disease (PD), has been demonstrated to induce secondary brain damage after cerebral ischemia. Therefore, understanding the expression and pathogenic modifications of AS is clinically meaningful for
Ronit Rosenfeld et al.
Nature communications, 12(1), 944-944 (2021-02-13)
The coronavirus disease 2019 (COVID-19) pandemic, caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), exhibits high levels of mortality and morbidity and has dramatic consequences on human life, sociality and global economy. Neutralizing antibodies constitute a highly promising
Yuankun Zhai et al.
Journal of cellular physiology, 234(10), 18602-18614 (2019-03-27)
Homocysteine (Hcy) is detrimental to bone health in a mouse model of diet-induced hyperhomocysteinemia (HHcy). However, little is known about Hcy-mediated osteoblast dysfunction via mitochondrial oxidative damage. Hydrogen sulfide (H2 S) has potent antioxidant, anti-inflammatory, and antiapoptotic effects. In this
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