paraxanthine/dichloromethane

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NakalaMajaribio ya klinikiHati miliki

Chagua aina ya aina

2 matokeo

[Development of syringe-type off line pre-column and simultaneous quantitation of four xanthine derivatives (caffeine, theobromine, theophylline and paraxanthine) in serum].

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Ingia / Ingia

A new syringe-type minicolumn, called Extrashot-Silica (EXS-Silica), containing diatomaceous earth granules was described. The EXS-Silica differs from the conventional pretreatment column. Using the EXS-Silica we can execute the simultaneous extraction-injection to HPLC, column. Therefore, an

High-performance liquid chromatographic determination of dimethylxanthine metabolites of caffeine in human plasma.

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Ingia / Ingia

A normal-phase high-performance liquid chromatographic assay of caffeine and its metabolites, theophylline, theobromine and paraxanthine, in human plasma is described. The two internal standards ethyltheophylline and 1,3,7-trimethyluric acid are used simultaneously and cover the range of different

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Herbal & Natural Medicine

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