| Journal: |
Analytical Methods
The Royal Society of Chemistry
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Volume: |
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| Abstract: |
Hypertension and dyslipidemia are two of the most frequently co-occurring cardiovascular risk factors. The
combined regimen of hydrochlorothiazide (HCTZ), rosuvastatin (ROS), and losartan (LOS) helped in the
successful management of both conditions. This work's objective is to develop an eco-friendly, sensitive,
simple, and reliable chromatographic method for the simultaneous estimation of HCTZ, ROS, and the
LOS ternary mixture in their pure form, and pharmaceutical formulations. Utilizing sodium dodecyl
sulphate (SDS) in combination with polyoxyethylene-23-lauryl ether (Brij-35) could be a greener option
with minimal environmental impact in liquid chromatographic separation techniques. Therefore,
a micellar HPLC protocol was optimized and validated employing a mobile phase comprising a mixture
of micelles of SDS (0.15 mol L−1
) and Brij-35 (0.03 mol L−1
) with 0.01 M monobasic potassium phosphate
buffer, pH 3.5. The cited drugs were detected at 230 nm within five minutes, using a symmetry RP-C18
column, an isocratic elution mode, and a flow speed of 1 mL min−1
. Method validation was successfully
performed as stated by ICH. The suggested HPLC approach was effectively applied to determine the
mentioned drugs in three pharmaceutical preparations. It was also employed for monitoring their in vitro
release pattern using two innovator tablet formulations, applying the USFDA guidelines. The applied
procedure was evaluated and compared with previously published HPLC approaches using various
metrics, including the Eco-Scale Scoring method (AES), the Green Analytical Procedure Index (GAPI), and
the Analytical Greenness Calculator (AGREE) for greenness, the most current Blue Applicability Grade
Index (BAGI) for blueness, and the more inclusive RGB 12 algorism for whiteness assessment
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