id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
eurjchem-1005	Younes, Kareem Mahmoud; Basha, Mai Adel; Salem, Maissa Yacoub	Application of π receptors to the spectrophotometric determination of naftidrofuryl oxalate in pure form and its pharmaceutical preparation	2014	5	.pdf	application/pdf	3283	165	53	The effect of the reagent concentration on the intensity of the color developed at the selected wavelengths was ascertained by adding different amounts of the reagents PCA, DDQ and TCNE to a fixed concentration of 200.0 μg/mL NAF in method A, 100 μg/mL in method B and 50.0 μg/mL NAF in method C. It was found that 2 mL of 0.125% PCA, 3.0 mL of 0.2% DDQ and 1.0 mL of 0.2% TCNE solutions were sufficient for the production of maximum and reproducible color intensity and the highest absorbance remained unaffected by further addition of these reagents (Figure 5). In order to select the suitable solvent for charge transfer complex formation, the reaction of NAF with PCA, DDQ and TCNE was carried out in different solvents such as chloroform, acetone, methanol and acetonitrile.	cache/eurjchem-1005.pdf	txt/eurjchem-1005.txt