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Multipurpose RP-HPLC Method for Simultaneous Estimation of Fixed-Dose Combinations of Anti-diabetic Drugs: Integrating Green, Economical, and Robust Approaches with Design of Experiments and White Analytical Chemistry

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Abstract

Background

Metformin hydrochloride is a common anti-diabetic medication, frequently prescribed in fixed-dose combinations for diabetes treatment. Various analytical methods, such as RP-HPLC and HPTLC, are employed to ensure the quality of these fixed-dose combinations. However, many of these methods utilized harmful organic solvents with potential environmental consequences. Consequently, there is a growing demand for greener and safer chromatographic methods. A recent concept of white analytical chemistry, emphasizes the development and assessment of chromatographic techniques based on validation, cost, time, and environmental sustainability.

Objectives

In line with this concept, an RP-HPLC method has been developed for the synchronous estimation of multiple fixed-dose combinations (FDCs) of metformin hydrochloride, utilizing low-toxic and economical solvents under a single chromatographic condition.

Methods

The RP-HPLC method was developed using the AQbD approach, which integrates analytical quality risk assessment and DoE principles. The goal was to reduce organic waste and ensure compliance with regulatory standards. The method was subsequently rigorously validated following ICH Q2 (R1) guidelines.

Results

The chromatographic separation of metformin and other drugs have been carried out using a Shim-Pack C18 column (250 mm × 4.6 mm, 5.0 µm) as stationary phase and the mobile phase, composed of ethanol: water (70 + 30, v/v) at pH 3.0 (adjusted using glacial acetic acid). The developed method was found to be specific, accurate, precise, robust and sensitive for estimation of multiple FDCs of metformin. The method was applied effectively to various metformin hydrochloride fixed-dose combinations, confirming label claim compliance. This method was also compared with published RP-HPLC methods, which were evaluated based on white analytical chemistry principles.

Conclusion

In conclusion, the proposed white analytical chemistry-driven RP-HPLC method offers a safe, cost-effective, and eco-friendly alternative to existing techniques for quality control and routine analysis of multiple fixed-dose combinations of metformin hydrochloride in the pharmaceutical industry.

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The data will be availed by corresponding author of manuscript on reasonable request.

Abbreviations

ICH:

International council for harmonization

RP-HPLC:

Reversed-phase high-pressure liquid chromatography

IP:

Indian Pharmacopoeia

PDE:

Permitted daily exposure

WAC:

White analytical chemistry

AQbD:

Analytical quality by design

AQRM:

Analytical quality risk management

DoE:

Design of experiments

CPPs:

Critical procedure parameters

CMPAs:

Critical method performance attributes

GAC:

Green analytical chemistry

QRM:

Quality risk management

MET:

Metformin hydrochloride

NATE:

Nateglinide

DGZ:

Dapagliflozin

GLB:

Glyburide

REPA:

Repaglinide

RSM:

Response surface modeling

AGREE:

Analytical greenness

GAPI:

Green analytical procedure index

NEMI:

National environmental method index

FDCs:

Fixed-dose combinations

APIs:

Active pharmaceutical ingredients

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Acknowledgements

The Maliba Pharmacy College’s Principal and the Uka Tarsadia University’s Provost are thanked by the authors for their enormous help in providing the necessary infrastructure and instrumentation equipment to carry out the research endeavor. Their contributions were crucial to the accomplishment of this investigation.

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Authors

Contributions

Dr PP—drafting, conceptualization, supervision, review. BR—methodology and writing. VSP—review, software analysis handling and drafting. AM—supervision and review support.

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Correspondence to Pintu Prajapati.

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Our research work does not include use of animal and human being. The manuscript has been solely submitted for publication in the future journal of pharmaceutical sciences. The authors of manuscript have declared that they do not have any conflicts of interest.

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Our research work does not include any human study. The manuscript entitles ‘Innovative RP-HPLC Method for Simultaneous Estimation of Fixed-Dose Combinations of Anti-diabetic Drugs: Integrating Green, Economical, and Robust Approaches with Design of Experiments and White Analytical Chemistry’ has been solely submitted to Future Journal of Pharmaceutical Sciences.

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Prajapati, P., Rana, B., Pulusu, V.S. et al. Multipurpose RP-HPLC Method for Simultaneous Estimation of Fixed-Dose Combinations of Anti-diabetic Drugs: Integrating Green, Economical, and Robust Approaches with Design of Experiments and White Analytical Chemistry. Chemistry Africa 7, 1385–1400 (2024). https://doi.org/10.1007/s42250-023-00835-9

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