Abstract
The correlation between blood pressure (BP) and cardiovascular risk has a continuous, positive, and linear pattern. Lowering high BP decreases the risk associated with cardiovascular disease. Chlorthalidone (CHD) and Losartan potassium (LOS) combination is used to treat hypertension. The analytical community was concerned with minimizing or reducing the use of toxic chemicals and solvents. Therefore, the current study aimed to develop a rapid, sensitive, and cost-effective green RP-HPLC method to determine CHD and LOS simultaneously in a short analysis of time. Method optimization was performed by Central composite design (CCD), the flow rate and the change of time were chosen as factors. Effective separation was conducted on Zorbax SB-C18 (4.6 mm \(\times\) 150 mm, 5 μm) column by gradient mobile phase comprising phosphate buffer and ethanol flowing at 0.859 ml/min, and the wavelength detected at 230 nm. As per ICH criteria, the technique was proven to be precise, accurate, and linear over the concentration range of 4.3–8.1 μg/ml for CHD and 35–65 μg/ml for LOS. Furthermore, the method’s greenness was examined by three different metrics, confirming that less toxic effect on the environment. Hence, the optimized approach proves to be eco-friendly, simple, and robust for the concurrent evaluation of CHD and LOS in pharmaceutical formulations.
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The authors are grateful to SRM College of Pharmacy, SRM Institute of Science and Technology, Kattankulathur, for their encouragement and support to conduct this research.
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Dharuman, N., Karunanidhi Santhana, L. & Krishnan, M. A design of experiment based RP-HPLC method for the simultaneous estimation of antihypertensive drugs with greenness assessment. ANAL. SCI. (2024). https://doi.org/10.1007/s44211-024-00538-2
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DOI: https://doi.org/10.1007/s44211-024-00538-2