A Study on Forced Degradation and Validation of Stability Indicating Rp-HPLC Method for Determination of Benzalkonium Chloride in Azelastine Hydrochoride Pharmaceutical Ophthalmic Formulation
Abstract:Objective: This study was designed to conduct forced degradation and validation studies for determination the benzalkonium chloride (BKC) as major homologues form in azelastine hydrochloride pharmaceutical ophthalmic formulation by a novel stability indicating reverse phase high-performance liquid chromatographic method (RP-HPLC).Methods: Forced degradation study and validation were carried out with a analytical approach of reverse phase chromatographic analysis with C18, cosmosil (250mm x 4.6mm i.d. x 5µm) co… Show more
Objective: The objective of present work was to develop and validate simple, precise, accurate and specific stability indicating method for determination of acotiamide in presence of its degradation products.Methods: An isocratic RP-HPLC method has been developed using C-8 Thermo Hypersil BDS Column (250 x 4.6 mm i.d., 5µparticle size) with the mobile phase composition of acetonitrile: 0.1 % triethylamine in 0.2% formic acid (30: 70) at column oven temperature of 40 °C. The flow rate was 1.0 ml min-1 and effluent was detected at 282 nm. The method was validated in terms of linearity, accuracy, precision, LOD (Limit of Detection), LOQ (Limit of Quantification) and robustness as per ICH guidelines.Results: The method was found to be linear in the range of 10-60µg/ml. Limit of detection and limit of quantification was found to 0.36µg/ml and 1.10 µg/ml.% Recovery was found to be in the range of 99.45%-99.75%and precision less than 2%. The developed method was successfully applied for estimation of Acotiamide in marketed tablet formulation and percentage assay was found to be 100.45%. Acotiamide was subjected to stress degradation under acid, base, neutral hydrolysis, oxidation, dry heat, photolysis conditions. Significant degradation was observed in acid and base degradation.Conclusion: The developed RP-HPLC method was simple, rapid, accurate, precise and stability indicating for the estimation of Acotiamide in bulk and tablet dosage form.
Objective: The objective of the current study was to develop and validate a simple, robust, precise and accurate RP-HPLC (reverse phase-high performance liquid chromatography) method for the quantitative determination of potential degradation products of Difluprednate (DIFL) in the ophthalmic emulsion.Methods: Chromatographic separation was achieved on the YMC pack ODS-AQ (150× 4.6) mm, 3μm column with a mobile phase containing a gradient mixture of mobile phase A (0.02M Ammonium formate buffer pH 4.5 adjusted with formic acid) and Acetonitrile as mobile phase B, at flow rate of 1.5 ml/min and with UV detection at 240 nm.Results: The peak retention time of DIFL was found at about 17.2 min, the RRT of degradation product-1 (DP-1), degradation product-2 (DP-2), and degradation product-3 (DP-3), were found to be about 0.49, 0.65 and 0.79 respectively (calculated with respect to Difluprednate). Stress testing was performed in accordance with an ICH (international council for harmonisation) guideline Q1A (R2) [1]. The method was validated as per ICH guideline Q2 (R1)[2]. The calibration curve was found to be linear in the concentration range of 0.1 to 0.75 µg/ml for Difluprednate, DP-1, DP-2 and DP-3. The LOD (Limit of detection) was found to be 0.1µg/ml and LOQ (Limit of quantification) of 0.15µg/ml for Difluprednate, DP-1, DP-2 and DP-3 respectively. The recovery from LOQ to 150% was within 90-110%. The forced degradation data confirms the stability indicating the nature of the method.Conclusion: A simple, robust, precise and accurate RP-HPLC method for the quantitative determination of potential degradation products of Difluprednate in the ophthalmic emulsion was developed and validated.
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