doi: 10.1016/s0378-4347(00)81690-4.
Determination of hydralazine metabolites: 4-hydrazino-phthalazin-1-one and n-acetylhydrazinophthalazin-1-one by gas chromatography and s-triazolo[3,4-alpha]phthalazine and phthalazinone by high-performance liquid chromatography
- PMID: 7400275
- DOI: 10.1016/s0378-4347(00)81690-4
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Determination of hydralazine metabolites: 4-hydrazino-phthalazin-1-one and n-acetylhydrazinophthalazin-1-one by gas chromatography and s-triazolo[3,4-alpha]phthalazine and phthalazinone by high-performance liquid chromatography
J Chromatogr.
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Abstract
Methods are described for the determination of 2-N-acetylhydrazinophthalazin-1-one, 4-hydrazinophthalazin-1-one, phthalazinone and s-triazolo[3,4-alpha]phthalazine in human urine. 4-Hydrazinophthalazin-1-one and 4-N-acetylhydrazinophthalazin-1-one (following acid hydrolysis) are reacted with acetylacetone to give a distinctive pyrazole derivative which can be determined by gas chromatography using a nitrogen-specific detector. Phthalazinone and s-triazolo[3,4-alpha]phthalazine are measured underivatised by high-performance liquid chromatography.
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