A novel HPLC-DAD method for simultaneous determination of alfuzosin and solifenacin along with their official impurities induced a stress stability study; investigation of their degradation kinetics
Stability and impurity profiling are in high demand to guarantee the potency, safety and efficacy of new formulations along with their shelf-life. In this study, stability testing of alfuzosin (ALF) and solifenacin (SOL) in their newly co-formulated capsules was conducted under different stress cond...
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Published in | Analytical methods Vol. 12; no. 26; pp. 3368 - 3375 |
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Main Authors | , , , |
Format | Journal Article |
Published |
09.07.2020
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Abstract | Stability and impurity profiling are in high demand to guarantee the potency, safety and efficacy of new formulations along with their shelf-life. In this study, stability testing of alfuzosin (ALF) and solifenacin (SOL) in their newly co-formulated capsules was conducted under different stress conditions. The obtained degradation products were structurally elucidated and found to be their official impurities, namely; ALF impurity-D and SOL impurities-A, E & I. A selective and reliable stability-indicating HPLC method was developed for assaying the cited drugs along with three of those official impurities. Chromatographic separation was accomplished within 8 minutes using a XBridge® C18 column as the stationary phase and acetonitrile : phosphate buffer (pH 8) : triethylamine (60 : 40 : 0.02, by volume) as the mobile phase at a flow rate of 1.3 mL min
−1
. Quantification of the analytes was performed at 210 nm using a diode array detector through which peak purity was assessed. The proposed method was validated as per ICH guidelines and it was successfully applied for the determination of the cited drugs in their combined pharmaceutical formulation with percent recoveries of 100.47 and 100.15 for ALF and SOL, respectively. Moreover, the proposed method was exploited for the assessment of the two drugs' stability in Solitral® capsules under accelerated storage conditions. The method was further extended for studying the degradation kinetics of the two drugs.
A stability-indicating HPLC method for simultaneous determination of alfuzosin, solifenacin and their official impurities accompanied by investigation of their degradation kinetics. |
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AbstractList | Stability and impurity profiling are in high demand to guarantee the potency, safety and efficacy of new formulations along with their shelf-life. In this study, stability testing of alfuzosin (ALF) and solifenacin (SOL) in their newly co-formulated capsules was conducted under different stress conditions. The obtained degradation products were structurally elucidated and found to be their official impurities, namely; ALF impurity-D and SOL impurities-A, E & I. A selective and reliable stability-indicating HPLC method was developed for assaying the cited drugs along with three of those official impurities. Chromatographic separation was accomplished within 8 minutes using a XBridge® C18 column as the stationary phase and acetonitrile : phosphate buffer (pH 8) : triethylamine (60 : 40 : 0.02, by volume) as the mobile phase at a flow rate of 1.3 mL min
−1
. Quantification of the analytes was performed at 210 nm using a diode array detector through which peak purity was assessed. The proposed method was validated as per ICH guidelines and it was successfully applied for the determination of the cited drugs in their combined pharmaceutical formulation with percent recoveries of 100.47 and 100.15 for ALF and SOL, respectively. Moreover, the proposed method was exploited for the assessment of the two drugs' stability in Solitral® capsules under accelerated storage conditions. The method was further extended for studying the degradation kinetics of the two drugs.
A stability-indicating HPLC method for simultaneous determination of alfuzosin, solifenacin and their official impurities accompanied by investigation of their degradation kinetics. |
Author | Weshahy, Soheir A Wadie, Mina Rezk, Mamdouh R Tantawy, Mahmoud A |
AuthorAffiliation | Faculty of Pharmacy Cairo University Analytical Chemistry Department |
AuthorAffiliation_xml | – name: Cairo University – name: Analytical Chemistry Department – name: Faculty of Pharmacy |
Author_xml | – sequence: 1 givenname: Mahmoud A surname: Tantawy fullname: Tantawy, Mahmoud A – sequence: 2 givenname: Soheir A surname: Weshahy fullname: Weshahy, Soheir A – sequence: 3 givenname: Mina surname: Wadie fullname: Wadie, Mina – sequence: 4 givenname: Mamdouh R surname: Rezk fullname: Rezk, Mamdouh R |
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Title | A novel HPLC-DAD method for simultaneous determination of alfuzosin and solifenacin along with their official impurities induced a stress stability study; investigation of their degradation kinetics |
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