para-nitroaniline

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para-nitroaniline

[¦par·ə ‚nī·trō′an·ə·lən]
(organic chemistry)
NO2C6H4NH2 Yellow crystals that melt at 148°C; insoluble in water, soluble in ethanol; a toxic material; used to make dyes, and as a corrosion inhibitor.
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A total of 256 bacterial isolates were collected through enrichment of the mineral salt medium with an aromatic amine, 4-nitroaniline (100 umol L-1), and dyes (100 mg L-1) using 10 mL wastewater/sludge as inoculum source.
The 4-nitroaniline was used for the isolation of bacteria capable of degrading dye originated aromatic compounds.
The compounds (1) was synthesized by the reaction of ferrocene with the diazonium salt of 2- methyl- 4-nitroaniline.
Although the previous study had proved that eleven hydrazine derivatives, aromatic amines showed direct mutagenicity and toxicity toward Salmonella Typhimurium and associated mutagenic process such derivatives as - phenylhydrazine, 2-nitro-phenyl-hydrazine, 4-nitrophenylhydrazine, 2,4-dinitrophenylhydrazine, p-tolihydrazine, and 4-nitroaniline [16].
One unit of trypsin activity corresponded to 1 [micro]mol 4-nitroaniline liberated in 1 min/mL extracellular enzymatic extract, based on the extinction coefficient of the substrate ([epsilon]407 = 8,200/M/cm).
Biodegradation products of Acid Orange 7 and Disperse Orange 3, by white rot fungus, Pleurotus ostreatus, were identified as 4-hydroxybenzenesulfonic acid, benzenesulfonic acid, 1,2-naphthoquinone, 4-nitrophenol, nitrobenzene, 4-nitroanisole, and 4-nitroaniline.
It describes the use of [gamma]-glutamyl-4nitroanilide as a substrate that is cleaved to form the easily measured 4-nitroaniline.
We found that 20 mM KCI, 1 mM 4-nitroaniline (4-NA), and 100 [mu]M 2,4-dinitroaniline (2,4 DNA) each almost completely prevented the cells from migrating into the lower phase.
The precision, in terms of CV of the absorbance of twelve repetitive recordings (390 nm, 150 [micro]L of buffered solutions of 4-nitroaniline per well), was [+ or -]0.