Some of the phenols used were inherently coloured ( phenolpthalein, nitrophenol ) and were simply assayed unreacted.
2.
In solution, 4-nitrophenol has a dissociation constant ( pK a ) of 7.15 at 25 �C.
3.
Dyeing is effected by heating the fabric in a solution of an organic compound, typically a nitrophenol derivative, and sulfide or polysulfide.
4.
By the action of ALP, phosphate groups are removed from the substrate and " para "-nitrophenol is liberated giving off a yellow color in solution which can be measured spectrophotometrically.
5.
For hydrolytic enzymes, colorimetric assays are required that use a p-nitrophenol ( p-NP )-linked substrate, or fluorometric assays that use a 4-methylumbelliferone ( MUF )-linked substrate.
6.
""'Nocardioides nitrophenolicus " "'is a bacterium from the genus of Nocardioides which has been isolated from industrial wastewater . " Nocardioides nitrophenolicus " has the ability to degrade p-nitrophenol.
7.
It is used as a chemical intermediate for azo coupling component 17 and the dyes disperse yellow 5 and acid blue 29 . The chemical is changed to other substances ( dyestuffs and " m "-nitrophenol ) during the dyeing process.
8.
A recombinant protein with both PCP-2 phosphatase domains was also able to dephosphorylate EGFR . However, when each of the two intracellular catalytic tyrosine phosphatase domains are expressed individually as recombinant proteins and assayed in vitro using the artificial substrate ?-nitrophenol phosphate ( pNPP ), both the first and second intracellular tyrosine phosphatase domain were able to dephosphorylate pNPP.
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