Abstract
The simultaneous analysis of main antileprosy drugs such as 4,4′-diaminodiphenyl sulfone (DDS), clofazimine, rifampicin and their main metabolites in serum was examined by high-performance liquid chromatography using a μBondapak C 1a column. When the drugs dissoluted from serum were developed by tetrahydrofuran—0.5% acetic acid (40:60), clofazimine and rifampicins could be analyzed separately. Apart from the mutual separation of water-soluble conjugates of DDS, the individual analysis of DDS, its main liposoluble metabolite and a few related sulfone compounds is possible when the drugs are first developed by acetonitrile—water (20:80). By the use of tetrahydrofuran—water (50:50) containing PIC B-5, the rapid measurement of clofazimine isolated from the other compounds is also possible.
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