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Tropical Journal of Pharmaceutical Research
Pharmacotherapy Group, Faculty of Pharmacy, University of Benin, Benin City, Nigeria
ISSN: 1596-5996
EISSN: 1596-5996
Vol. 13, No. 1, 2014, pp. 135-139
Bioline Code: pr14019
Full paper language: English
Document type: Research Article
Document available free of charge

Tropical Journal of Pharmaceutical Research, Vol. 13, No. 1, 2014, pp. 135-139

 en Analysis of Simvastatin using a Simple and Fast High Performance Liquid Chromatography-Ultra Violet Method: Development, Validation and Application in Solubility Studies
Munir, Abubakar; Ahmad, Mahmood; Malik, Muhammad Zubair & Minhas, Muhammad Usman


Purpose: To develop and validate an accurate, rapid and reproducible reversed-phase high performance liquid chromatography (RP-HPLC) analytical method for the lipid lowering drug, simvastatin, and to apply the developed method to study the solubility of the drug in various oils and surfactants.
Methods: Isocratic RP-HPLC system with a UV-vis detector, and a column with dimensions 4.6 mm x 150 mm and 5µ particle size, was employed. The mobile phase consisted of methanol and 0.01M KH2PO4 phosphate buffer (80:20) at pH 5.5 adjusted with phosphoric acid (2M) and pumped at a flow rate of 1 ml/min. Validation parameters, viz, limit of detection (LOD), limit of quantification (LOQ) linearity, accuracy, precision, and sensitivity, were established. Solubility study was performed in various oils and surfactants at 25 °C and the developed HPLC method was applied to analyze all samples.
Results: The developed HPLC method showed good linearity (R2 = 0.9958 ± 0.0040. The intra- and inter-day % accuracy was more than 98 %. LOQ and LOQ were 0.160 and 0.484 μg/ml respectively. Simvastatin showed the highest solubility in sesame oil (15 mg/ml) and in Tween 80 (11 mg/ml) at 25oC.
Conclusion: An accurate, rapid and robust HPLC-UV method has been developed, validated and applied successfully to determine the solubility of simvastatin in oils.

Simvastatin; Validation; Solubility; Sesame oil; Tween 80

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