Validated stability-indicating high performance thin layer chromatographic method for determination of Ivabradine hydrochloride in bulk and marketed formulation: An application to kinetic study

New ecological first derivative synchronous spectrofluorimetric method for simultaneous quantification of carvedilol and ivabradine in tablets

A new, rapid, selective, green, and highly sensitive method has been established to determine ivabradine and carvedilol simultaneously. The first derivative synchronous spectrofluorimetric approach was applied for the determination of the studied drugs. Assessment of the first derivative amplitude of carvedilol and ivabradine has been done at 339 nm and 298 nm respectively which are the zero crossing points of each other. The method validation is estimated and was found to be consistent with International Conference on Harmonization guidelines. Linearity was found to be in the range of 10.0 to 90.0 ng/mL for carvedilol and from 80.0 to140.0 ng/mL for ivabradine. The detection limits were found to be 1.2 ng/ mL and 3.3 ng/mL and the quantitation limits were 3.7 ng / mL and 10.0 ng /mL for carvedilol and ivabradine, respectively. The method was effectively applied for the determination of both drugs in their synthetic mixture in different ratios and in their prepared co-formulated tablets. The results were compared with those of comparison HPLC methods. Ethanol was used as a green solvent. The proposed method is suitable for the determination of ivabradine and carvedilol with satisfactory accuracy and precision. The greenness of the method was evaluated using four assessment tools, i.e. NEMI, GAPI, Eco-scale, and AGREE. The proposed method is simple with a low cost compared to HPLC methods.

Fluorescence spectroscopy method for estimation of Ivabradine in bulk and the tablet dosage form

A simple and sensitive spectrofluorimetric method has been developed for the estimation of Ivabradine HCl in bulk and the tablet dosage form. Ivabradine HCl in methanol produces fluorescence at 325 nm (λem) with excitation at 287 nm (λex). The linearity range was found to be 100-500 ng/ml with a correlation coefficient of 0.999. The limit of detection (LOD) and limit of quantitation (LOQ) for the developed method were found to be 8.38 and 25.39 ng/ml, respectively. The developed method was found to be specific, sensitive, accurate, and precise. It was successfully used for the estimation of Ivabradine HCl in its tablet dosage form. The content of Ivabradine HCl in marketed formulations was found to be 101.25 ± 1.16 % of label claims.

Screening Design and Response Surface Methodology for the Simultaneous Estimation of Carvedilol and Ivabradine HCl by HPTLC Method

The combination of carvedilol (CAR) and ivabradine (IVA) is used for a greater reduction in heart rate and for achieving better exercise capacity in a patient with chronic heart failure. Numerous reverse-phase high-pressure liquid chromatography (RP-HPLC) and hyphenated techniques have been reported for the simultaneous estimation of CAR and IVA, but the high-performance thin-layer chromatographic (HPTLC) method has not been reported yet. Hence, the robust HPTLC method has been developed by the implementation of an enhanced analytical quality by design approach based on the principles of analytical failure modes critical effect analysis (AFMCEA) and design of experiments (DoE) as per the upcoming ICH Q14 guideline. The AFMCEA was started by the identification of potential analytical failure modes followed by their critical effect analysis by a DoE-based screening design. The high-risk failure modes were optimized by DoE-based response surface methodology. The method operable design ranges and control strategy was framed for optimized chromatography conditions. The HPTLC method was validated as per ICH Q2 (R1) guideline. The HPTLC method was applied for the assay of FDC of CAR and IVA, and results were found in compliance with the labeled claim. The developed method can be used as an alternative to the published RP-HPLC method for quality control of FDC of CAR and IVA in the pharmaceutical industry.

Analytical Method Development and Validation for Simultaneous Estimation of Trimetazidine Hydrochloride and Metoprolol Succinate Using HPTLC

Introduction:

Trimetazidine and Metoprolol combination is more effective in the treatment of cardiac disorders as compared to single drug therapy.Background:

Materials and Methods:

A rapid, simple, and sensitive HPTLC method was developed for the simultaneous determination of Trimetazidine and metoprolol from its tablet dosage form and validated. In HPTLC method, standard and sample solutions of Trimetazidine hydrochloride and metoprolol succinate were applied on pre-coated silica gel G 60 F254 TLC plate, and developed by using mobile phase, n-butanol :water: methanol: ammonia as solvent (8.5:0.1:0.1: 0.85, v/v). The drugs on plate were scanned at 213 nm. The method produced compact and well-resolved bands at Rf of 0.32 ± 0.02 and 0.66 ± 0.02 for Trimetazidine Hydrochloride and Metoprolol succinate respectively. The range for linearity was observed as 500-2500 ng band-1 for Trimetazidine hydrochloride and 500-2500 ng band-1 for metoprolol succinate and correlation coefficient were 0.9991 and 0.9997 respectively.

Conclusion:

The developed method was validated according to the ICH guidelines for precision, accuracy, Limit of detection, Limit of quantitation, specificity and robustness. The method was checked for suitability in determination of Trimetazidine hydrochloride and Metoprolol succinate in their tablet dosage form. The assay result was found to be 99.64 % ± 0.45 and 99.94 % ± 0.53 of percentage label claim for Trimetazidine hydrochloride and Metoprolol succinate respectively.

Application and Validation of Simple Isocratic HPLC-UV-DAD Method with Dual Wavelength Detection for Ivabradine Determination and Its Application in the Study of Stress Degradation

Ivabradine is a modern drug that selectively lowers the heart rate, improves cardiac energy balance, and reduces heart’s demands for oxygen and energy. Due to the chemical nature of ivabradine, which absorbs light at 207 nm and 286 nm, its detection was performed at two wavelengths. A Knauer C8 column was used to develop the RP-HPLC method for determination of ivabradine. The proposed method was linear from 5 to 100 µg/ml (r>0.999) for both wavelengths and limits of detection (LOD) and limits of quantification (LOQ) were 0.33 and 1.09 µg/ml for 207 nm and 1.19 and 3.97 µg/ml for 286 nm, respectively. After validation, the investigated method was applied to a stress degradation study. Numerous degradation products were formed from ivabradine solutions through alkaline and acid hydrolysis, oxidation, and photolysis. The largest numbers of degradation products were found in the sample exposed to 24 h radiation and alkaline hydrolysis (eight and six products, resp.). Finally, the simple method using HPLC-UV-DAD was developed and validated. Its usefulness for the monitoring of possible degradation products was demonstrated.