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J. Bichan M, M. AL-Abady F, K. Al-Bayati Y, F. Awwadi F. Preparation and computational investigation of molecular imprinted polymers for Clidinium Bromide. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Pathak S, Mishra P. Stability-indicating HPLC-DAD method for the determination of empagliflozin. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021. [DOI: 10.1186/s43094-021-00329-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
A stability-indicating RP-HPLC method was developed and validated for the estimation of empagliflozin drug and its tablet dosage form using a DAD detector. The mobile phase consisted of methanol/acetonitrile/0.1%OPA (75:20:5). The peak was observed at 2.54 min using 222.0 nm absorption maxima.
Results
Calibration curve plot was found within the range of 10–50 µg/mL. The coefficient of determination (R2) was found to be 0.9990. Forced degradation studies were performed for the empagliflozin in various conditions, and the results were calculated as %RSD values and were found to be within the limits.
Conclusion
The method was validated as per ICH guidelines with respect to all validation parameters.
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Lotfy HM, Fayez YM, Michael AM, Nessim CK. Evaluation of the Efficiency of Smart Stability-Indicating Spectrophotometric Methods Based on Mathematical and Statistical Processing of the Obtained Results Via Different Manipulating Pathways. CURR PHARM ANAL 2020. [DOI: 10.2174/1573412914666181017144323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Smart different stability-indicating spectrophotometric methods have been
established for the assay of chlordiazepoxide and clidinium bromide without the intervention of alkaline
degradate of clidinium via various and different manipulating pathways without previous separation
steps.
Objective:
The specificity of the established methods was inspected by analysing mixtures of cited
drugs in the existence of the alkali-induced degradation product.
Methods:
These methods were employed either on scanned zero-order absorption spectra using absorbance
subtraction, dual wavelength and Q-absorbance ratio or the amplitudes of the ratio spectra of
zero-order absorption spectra like amplitude modulation and by derivative techniques to the ratio spectra
as a derivative ratio method. In addition, the absorbance of the recovered zero-order absorption spectra
was applied by successive ratio subtraction coupled with constant multiplication. Finally, the pathway
depends on the amplitudes of the derivative spectra, successive derivative subtraction coupled with
constant multiplication. The ranges of linearity were (1-12µg/mL) for chlordiazepoxide and (3-
12µg/mL) for clidinium bromide.
Results:
The outcomes achieved by the prospective methods were in consent with those of the official
and reported methods when statistically compared using student’s t test, F-test and one-way ANOVA
where no significant difference was detected with suitable precision, proving the absence of any important
difference in accuracy and precision between them. They were confirmed in accordance with International
Conference on Harmonization guidelines.
Conclusion:
The established methods can be considered as alternative methods for the routine determination
of this fixed dose combination with minimum sample preparation.
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Affiliation(s)
- Hayam Mahmoud Lotfy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt
| | - Yasmin Mohamed Fayez
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt
| | - Adel Magdy Michael
- Analytical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, 12566, 6th of October City, Egypt
| | - Christine Kamal Nessim
- Analytical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, 12566, 6th of October City, Egypt
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