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N2770

Sigma-Aldrich

p-Nitrophenyl phosphate

SIGMAFAST™, chromogenic, tablet

Synonym(s):

pNPP tablets

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About This Item

EC Number:
224-246-5
MDL number:
MFCD00284586
UNSPSC Code:
12352204
NACRES:
NA.83

product name

SIGMAFAST™ p-Nitrophenyl phosphate Tablets, tablet, To prepare 20 mL

form

tablet

solubility

water: 0.25 tablet/mL, clear, colorless

storage temp.

−20°C

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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 Sigma FAST 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.

Reconstitution

Each tablet set dissolved in 20 mL deionized water yields a ready-to-use buffered solution containing pNPP.

Legal Information

SIGMAFAST is a trademark of Sigma-Aldrich Co. LLC

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

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G Gasperini et al.
Infection and immunity, 89(4) (2020-12-16)
Typhoid and paratyphoid fevers have a high incidence worldwide and coexist in many geographical areas, especially in low-middle-income countries (LMIC) in South and Southeast Asia. There is extensive consensus on the urgent need for better and affordable vaccines against systemic
Fredman González et al.
medRxiv : the preprint server for health sciences (2021-05-06)
New information is emerging about SARS-CoV-2 epidemiology and immunity, but little of this information comes from low- and middle-income countries or from patients receiving care in the outpatient setting. The current study investigated the SARS-CoV-2 infection status and antibody responses
Phillipp Hartmann et al.
Frontiers in physiology, 12, 699253-699253 (2021-08-06)
Alcohol-associated liver disease (ALD) is an important cause of morbidity and mortality worldwide. The intestinal microbiota is involved in the development and progression of ALD; however, little is known about commensal fungi therein. We studied the dynamic changes of the
Fernando Diaz et al.
Virology, 513, 129-135 (2017-10-27)
Herpes simplex virus 2 (HSV-2) is the leading cause of genital herpes and increases the risk of HIV infection, but there is no effective vaccine. A replication-defective HSV-2 mutant virus, dl5-29, is effective in animal models and has been in
Roberta Di Benedetto et al.
International journal of molecular sciences, 22(19) (2021-10-14)
Outer Membrane Vesicles (OMV) constitute a promising platform for the development of efficient vaccines. OMV can be decorated with heterologous antigens (proteins or polysaccharides), becoming attractive novel carriers for the development of multicomponent vaccines. Chemical conjugation represents a tool for
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