title: Determination of unchanged hydralazine in plasma by gas-liquid chromatography using nitrogen-specific detection.
abstract: A gas chromatographic method is described for the specific determination of unchanged hydralazine in plasma. On treatment with 2,4-pentanedione, hydralazine is converted into 1-(3,5-dimethyl-1-pyrazolyl)phthalazine, a stable compound which is easily extracted from biological material and determined quantitatively by gas chromatography with nitrogen-specific detection. 4-Methylhydralazine is used as an internal standard. The sensitivity of the method is ca. 10 ng/ml. Hydrazones of hydralazine do not interfere with the assay.
mesh_terms: D000818:Animals; D002849:Chromatography, Gas; D006830:Hydralazine / Q000097:blood*; D008297:Male; D008832:Microchemistry; D009584:Nitrogen; D051381:Rats
chemical_list: D006830:Hydralazine; D009584:Nitrogen