Gas chromatographic determination of guanabenz in biological fluids by electron-capture detection.

Autor: Knowles JA, White GR, Kick CJ, Spangler TB, Ruelius HW
Jazyk: angličtina
Zdroj: Journal of pharmaceutical sciences [J Pharm Sci] 1982 Jun; Vol. 71 (6), pp. 710-1.
DOI: 10.1002/jps.2600710627
Abstrakt: A sensitive gas chromatographic method for the determination of guanabenz[(2,6-dichlorobenzylidene)amino]guanidine in urine and plasma was developed. The method depends upon the acid hydrolysis of guanabenz to 2,6-dichlorobenzaldehyde, which has strong electron capturing properties and is volatile enough to be eluted from a gas chromatographic column. Concentrations as low as 0.1 ng of guana-benz/ml can be determined and recovery of the drug from urine and plasma samples is 81.8+/- 5.5% (SD). No interferences arising from plasma, urine, or reagents were encountered. Examples of the application of the method are given.
Databáze: MEDLINE