Özet:

The aim of the work. To develop and validate the UV spectrophotometric procedure for the quantitative determination of 1-[7-(2-hydroxyethyl-1)-3-methylxanthine-8-yl]piperazine chloride. Materials and Methods. The study object was the substance of 1-[7-(2-hydroxyethyl-1)-3-methylxanthine-8-yl]piperazine chloride. Distilled water used as the solvent. Analytical equipment: spectrophotometer Specord 200, electronic balance AVT-120-5DM, measuring glassware of class A. Results and Discussion. The absorption band that observed at 260–320 nm with an absorption maximum at 289 nm was chosen to develop the quantitative determination method. According to SPU, the developed method was validated by the standard method for such validation characteristics as linearity, range of application, precision, accuracy and robustness. The calculated numerical values of linear dependence indicate that the method is linear throughout the selected concentration range (73–126 %). Precision was determined at the level of repeatability. It was found that the one-sided interval of a single value does not exceed the maximum permissible uncertainty of the analysis, so this method is accurate. It was proved that the absorption of the analyzed solutions remains stable for at least 1 hour. The predicted total uncertainty of the results for the quantitative determination method, which does not exceed its critical value, was also calculated. Thus, the method will give correct results in other laboratories.Conclusion. The UV spectrophotometric procedure for the quantitative determination of 1-[7-(2-hydroxyethyl-1)-3-methylxanthine-8-yl]piperazine chloride was developed and validated.

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