نتایج جستجو برای: 2 hydroxynaphthalene 1
تعداد نتایج: 3933668 فیلتر نتایج به سال:
Many pharmacological agents include "inactive" constituents that are used to alter the solubility, stability, or pharmaceutical properties of a drug. These "salts" are often ignored, and the "active ingredient" gets all of the attention. Pamoic acid (4-[(3-carboxy-2-hydroxynaphthalen-1-yl)methyl]-3-hydroxynaphthalene-2-carboxylic acid) has been used in formulations of several drugs as pamoate s...
Cultures of the ligninolytic fungus Irpex lacteus incubated in a nutrient liquid medium degraded more than 70% of the initially applied benz[a]anthracene within 14 days. At the first step of metabolization, benz[a]anthracene was transformed via a typical pathway of ligninolytic fungi to benz[a]anthracene-7,12-dione (BaAQ). The product was further transformed by at least two ways, whereas one is...
Polycyclic aromatic hydrocarbons (PAH) are products of the incomplete combustion of organic materials, and they occur ubiquitously in the environment. They are also present in tobacco smoke. Some PAH have been classified as carcinogens; therefore, it is important to develop and assess suitable biomarkers for PAH exposure. A high-performance liquid chromatographic method with fluorescence detect...
A 32P-postlabeling assay was employed for detection and quantitation of DNA adducts formed with carcinogenic 1-phenylazo-2-hydroxynaphthalene (Sudan I, Solvent Yellow 14) activated by a peroxidase system. Enrichment of adducts by digestion with nuclease P1 or by extraction into n-butanol prior to 32P-labeling was used. Both enrichment procedures exhibited comparable results for recovery of indi...
2-Amino-5,10-dioxo-4-aryl-5,10-dihydro-4H-benzo[g]chromene-3-carbonitrile derivatives are obtained in excellent yields with a simple and efficient procedure.This reaction can occur using electrocatalytic multicomponent chain transformation of aryl aldehydes, 2-hydroxynaphthalene-1,4-dione and malononitrile under neutral and mild conditions. Moreover, electrolysis is done in CH3CN as solvent, Te...
A sensitive and selective spectrophotometric method for the determination of boron is described. The method is based on the colour reaction between boron and the reagent 1-(2-hydroxy-3-methoxybenzylideneamino)-8-hydroxynaphthalene-3,6-disulfonic acid (HMOA). In a HOAc-NH4OAc buffer of pH 5.5, HMOA reacts with boron to form a 1:2 yellow complex with a maximum absorption at 423 nm. The absorbance...
Using sodium4-((4,5-diphenyl-imidazol-2-yl)diazenyl)-3-hydroxynaphthalene-1-sulfonate (SDPIHN) as a chromogenic reagent in presence of non-ionic surfactant (Triton x-100) to estimate the chromium(III) ion if wavelength this 463 nm form dark greenish-brown complex 586 at pH=10,the was stable for longer than 24 hours. Beer's low, molar absorptivity 0.244×104L.mol-1.cm-1, and Sandal's sensitivity ...
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