Determination of quinidine, dihydroquinidine, (3S)-3-hydroxyquinidine and quinidine N-oxide in plasma and urine by high-performance liquid chromatography
1994; Elsevier BV; Volume: 660; Issue: 1 Linguagem: Inglês
10.1016/0378-4347(94)00259-2
ISSN1872-812X
AutoresFlemming Nielsen, Karin Kramer Nielsen, Kim Brøsen,
Tópico(s)Microfluidic and Capillary Electrophoresis Applications
ResumoA specific and sensitive method for the quantitation of quinidine, (3S)-3-hydroxyquinidine, quinidine N-oxide, and dihydroquinidine in plasma and urine has been developed. The method is based on a single-step, liquid—liquid extraction procedure, followed by isocratic reversed-phase high-performance liquid chromatography, with fluorescence detection. After extraction from 250 μl plasma and 100 μl urine, the limit of determination is 10 nM and 25 nM, respectively. For the use as standards, commercially available quinidine was purified from dihydroquinidine; quinidine N-oxide was synthesized.
Referência(s)