Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 92, 325-335 (2012-03-27)
The FTIR and FT-Raman spectra of 2-quinoxaline carboxylic acid (2-QCA) has been recorded in the region 4000-450 and 4000-100 cm(-1), respectively. The conformational analysis, optimized geometry, frequency and intensity of the vibrational bands of 2-QCA were obtained by the density
Food additives and contaminants, 12(2), 177-183 (1995-03-01)
A method for the determination of residues of quinoxaline-2-carboxylic acid (QCA), the major metabolite of carbadox, in pig kidney has been developed. Tissue samples were subjected to alkaline hydrolysis, liquid-liquid extractions, ion-exchange chromatography and further extraction to concentrate the analyte
Zinc oxide field effect transistors (ZnO-FET), covalently functionalized with single stranded DNA aptamers, provide a highly selective platform for label-free small molecule sensing. The nanostructured surface morphology of ZnO provides high sensitivity and room temperature deposition allows for a wide
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 816(1-2), 15-20 (2005-01-25)
A method is described for the quantitative determination of quinoxaline-2-carboxylic acid (QCA) and methyl-3-quinoxaline-2-carboxylic acid (MQCA), the metabolites that have been designated as the marker residues for the veterinary drugs, carbadox and olaquindox, respectively, in swine tissue. The method is
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 874(1-2), 7-14 (2008-10-08)
Cyadox (CYX) is an antimicrobial growth-promoter of the quinoxalines. It is highly effective on improving growth and feed conversion of chicken with little toxicity. For food safety concerns, HPLC-UV methods were developed for the sequential determination of CYX and its
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.