Novel Stability Indicating RP-HPLC Method for The Estimation of Pinaverium Bromide in Tablet Formulation: Assay Development and Validation
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Department of Pharmaceutical Chemistry, Kamla Nehru College of Pharmacy, Nagpur – 441108, Maharashtra, INDIA
Debarshi Kar Mahapatra   

Department of Pharmaceutical Chemistry, Kamla Nehru College of Pharmacy, Nagpur−441108, Maharashta, India
Online publication date: 2016-12-07
Publication date: 2016-12-07
Eurasian J Anal Chem 2017;12(2):3–16
A selective RP-HPLC method has been developed for the estimation of pinaverium bromide (PB) in tablet dosage form. A Phenomenox C18 (250 x 4.6 mm i.d., particle size 5 µm) column with ammonium acetate buffer (pH 3.0) and acetonitrile (20:80) was employed as the mobile phase. The flow rate of 1 mL/min was utilized employing 214 nm as detector range where the drug eluted at 5.067 min. The method was validated further for linearity, accuracy, precision, and robustness according to the ICH guidelines. Forced degradation studies were performed under neutral, acidic, alkaline conditions along with thermal, photolysis and oxidative stress conditions, where the drug exhibited degradation and various peaks were monitored. The method was found to be linear over the range concentration range of 12.5-75.0 μg/mL (r2 values of 0.999), accurate (recovery of about 100.22% with % RSD of < 2%), highly precise (% RSD of < 2% in both intra-day and inter-day study), and robust enough to deliver accurate results when the chromatographic conditions were altered deliberately. No interference of additives/excipients was encountered while developing this method. Highest degradation was observed under oxidative stress condition. This method will help in the quantitative determination of PB and its degraded products.
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