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HPTLC Method for the Ultrasensitive Detection of Triamterene in Plasma.
Journal of Chromatographic Science 2021 June 15
A high-performance thin-layer chromatographic (HPTLC) method has developed for the selective detection of a diuretic drug, triamterene (TRIAM), in pure form, tablets and human plasma. The method was based on chromatographic separation of TRIAM using HPTLC plates, precoated with silica gel, and a mobile phase consisted of ethyl acetate: dimethylformamide: ammonia (7.0: 2.7: 0.3, by volume). The native fluorescence signal of TRIAM was detected at 440 nm and used to quantify TRIAM using the proposed method, improving the method sensitivity to ~250-folds in comparison to that reported in previous HPTLC studies. The developed method enabled the detection of TRIAM in pure drug and biological samples (human plasma) within linear concentrations ranged from 0.8 to 60 ng/band or 1.0 to 60 ng/band for pure drug and plasma samples, respectively. Furthermore, the method was validated according to the official guidelines to permit its applicability in quality control and clinical laboratories.
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