A New spectrophotometric method for the determination of atorvastatin

Aim: In order to determine the amount of atorvastatin found in pharmaceutical formulations and drugs, it is aimed to develop a spectrophotometric method without the need for extraction by forming a charge transfer complex with the help of quinalizarin as a reagent. Material and Method: A blue-colored charge transfer complex with maximal absorbance at 573 nm was generated in the room environment in the presence of kinetics with methanol. Different variables that affect the reaction have been optimized and studied. Results: In quantitative determination of atorvastatin; Experiments were conducted to provide the most favorable conditions to ensure a very dense color and maximum color development of the generated charge transfer complex. For the development and analysis of the method; The process of evaluating the effect of the solvent structure, studying the effect of the reagent concentration and evaluating the time required to complete the reaction and the stoichiometry of the reaction were followed. Conclusion: The proposed method is also; it has the advantage of being the charge transfer reaction between atorvastatin and quinalizarin in a solvent only and can be improved. The linearity of the calibration line was obtained between 10-100 g / mL, and the detection and quantification limits were calculated as 1,49 µg/mL and 4,98 µg/mL, respectively. Therefore, the proposed charge transfer complex reaction is practical and economical in routine analysis of atorvastatin in quality control laboratories. Key Words: Charge Transfer Complex, Atorvastatin, Quinalizarin, Pharmaceutical Formulation, UV-VIS