N-phenyl-2-naphthylamine

Figure 3. Four parameter, simplex-optimized SFC separation of a 12-component mixture. Chromatographic conditions as in Vertex 13 of Table II. Sample components isoquinoline, n-octadecane (n-CigH3g), naphthalene, quinoline, acetophenone, undecylbenzene, benzophenone, 2 -acetonaphthone, diphenylamine, o-dioctylphthalate, unidentified impurity, N-phenyl-1-naphthylamine, phenanthrene quinone. Other conditions as described in the experimental section.

In the ketone method, the central carbon atom is derived from phosgene (qv). A diarylketone is prepared from phosgene and a tertiary arylamine and then condenses with another mole of a tertiary arylamine (same or different) in the presence of phosphorus oxychloride or zinc chloride. The dye is produced directly without an oxidation step. Thus, ethyl violet [2390-59-2], Cl Basic Violet 4 (15), is prepared from 4,4 -bis(diethylamino)benzophenone with diethylaniline in the presence of phosphorus oxychloride. This reaction is very useful for the preparation of unsymmetrical dyes. Condensation of 4,4,-bis(dimethylamino)benzophenone [90-94-8] (Michler s ketone) with N-phenyl- 1-naphthylamine gives the Victoria Blue B [2580-56-5], Cl Basic Blue 26, which is used for coloring paper and producing ballpoint pen pastes and inks. 

Figure 9. A. Thermotropic fluorescence spectra of E. coli DH1 cells using the hydrophobic probe, N-phenyl-1 -naphthylamine (NPN). (a) Mid-log phase cells (b) stationary phase cells (c) cells made genetically transformable by the method of Hanahan.146 NPN was added to 4 mL of cell culture to a final concentration of 1 pM and the thermotropic fluorescence spectra were recorded.24 Measurements were made at increasing temperature (ca. 2 °C per min). Excitation 360 nm emission 410 nm. Measurements were made at increasing temperature (ca. 2 °C per min). B. Effects of physical treatments on the thermotropic transitions in genetically competent E. coli DH1. (a) Thermotropic transitions at descending temperature (b) cells pelleted at low speed and suspended in supernatant (c) as in b but suspended in equal volume of distilled water (d) as in (b) but suspended in 10 mM phosphate buffer, pH 7.4. Excitation 360 nm emission 410 nm. Fluorescent probe was NPN. Measurement (a) was made at decreasing temperature and (b), (c), (d) at increasing temperatures (ca. 2 °C per min).

The importance of the cyclical regeneration of nitroxide in the aromatic series seems to be therefore questionable N,N -di-substituted PD, most probably not involved in this cycle, are generally more efficient chain-breaking antioxidants than both diphenylamine and N-phenyl-1-naphthylamine, potentially partly involved in the nitoxide cycle. It may, therefore, be supposed that the high antioxidant activity of PD more probably accounts for the positive cooperative effects of PD with its principal oxidative transformation product, BQDI. 

Naphthalenedisulfonic acid, 4-((4-anilino-5-sulfo-1-naphthyl) azo)-5-hydroxy-, trisodium salt 1-Naphthol-3,6-disulfonic acid-8-azo-4 -[N-phenyl-1 -naphthylamine]-8 -sulfonic acid trisodium salt Sodium anazolene Trisodium 4 -anilino-8-hydroxy-1,1 -azonaphthalene-3,6,5 -trisulfonate... 

Synonyms 1-Anilinonaphthalene Cl 44050 N-1-Naphthylaniline PAN PANA Phenyinaphthylamine a-PhenyInaphthylamine N-Phenyl-1 -naphthylamine N-Phenyl-a-naphthylamine Empirical C16H13N Formula CioHyNHCeHs Properties Wh. to si. yish. cryst. prisms sol. in water, acetic acid, alcohol, ether, benzene, chloroform, oxygenated and aromatic soivs. m.w. 219.29 dens. 1.17 kg/l m.p. 62 C b.p. 335 C (260 mm)... 

The following fluorescent probes were chosen as substrates N-phenyl-1-naphthylamine (PNA), 1-benzyl-1,4-dihydronicotinamide (BNAH), indole, indolyl-Sracetic acid, 8-anilinonaphthalene-l-sulfonate (ANS), 6-p-toluidinylnaphthalene-2-sulfonate (TNS), and l-dimethylaminonaphthalene-5-sulfonamidoethyltrimethylammonium (DASP). 

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