Abstract
It has long been difficult to determine hydralazine in biological fluids for biopharmaceutical and pharmacokinetic purposes. The drug can react with a number of endogenous compounds, e.g. pyruvic acid or ±-ketoglutaric acid, to form acid-labile hydrazones. Being a base, hydralazine is extractable from biological fluids only at basic pH values where it is unstable, being degraded mainly to phthalazine. A derivatization procedure which can be carried out directly in biological fluids is therefore essential.
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Degen, P.H. (1988). The Assay of Hydralazine: A Review. In: Reid, E., Robinson, J.D., Wilson, I.D. (eds) Bioanalysis of Drugs and Metabolites, Especially Anti-Inflammatory and Cardiovascular. Methodological Surveys in Biochemistry and Analysis, vol 18 A. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9424-3_24
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DOI: https://doi.org/10.1007/978-1-4757-9424-3_24
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