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Estimation of Duloxetine Hydrochloride in Pharmaceutical Formulations by RP-HPLC Method
Sejal K Patel1, N J Patel, K M Patel
1S. K. Patel college of Pharmaceutical Education and Research, Ganpat University, Kherava-382 711, India.
Indian Journal of Pharmaceutical Sciences
|March 4, 2011
Summary
A new reverse-phase high-performance liquid chromatography method accurately estimates duloxetine HCl in pharmaceuticals. This validated method offers precise quantification for drug content analysis in various formulations.
Area of Science:
- Analytical Chemistry
- Pharmaceutical Analysis
Background:
- Accurate quantification of active pharmaceutical ingredients (APIs) is crucial for drug quality control.
- Duloxetine hydrochloride (HCl) is a widely used antidepressant requiring reliable analytical methods for its determination.
Purpose of the Study:
- To develop and validate a simple, specific, accurate, and precise reverse-phase high-performance liquid chromatography (RP-HPLC) method for estimating duloxetine HCl in pharmaceutical formulations.
Main Methods:
- RP-HPLC analysis using a Phenomenox C-18 column.
- Isocratic elution with a mobile phase of phosphate buffer (pH 5.5) and acetonitrile (60:40 v/v).
- Detection at 231 nm with a flow rate of 1.2 ml/min.
Main Results:
- The method demonstrated excellent linearity over the range of 0.25-4 μg/ml.
- The limit of detection (LOD) was 0.10 μg/ml, and the limit of quantification (LOQ) was 0.25 μg/ml.
- The developed method was successfully applied to determine duloxetine HCl content in marketed pharmaceutical products.
Conclusions:
- The proposed RP-HPLC method is suitable for the routine quality control of duloxetine HCl in pharmaceutical formulations.
- The method's simplicity, accuracy, and precision make it a valuable tool for pharmaceutical analysis.
- This validated analytical technique ensures the reliable estimation of duloxetine HCl, contributing to patient safety.
