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Sci. Pharm. 2014, 82(3), 601-616; doi:10.3797/scipharm.1401-21

New Chemometrics Mode Based on Adjacent Data Points’ Differences for the Simultaneous Determination of Clopidogrel, Atorvastatin, and Aspirin in their Combined Ternary Drug Formulation

1
Analytical Chemistry, Department of Chemistry, Alaqsa University, P.O.Box 4051, Gaza, Palestine
2
Pharmaceutical Analytical Chemistry, Department of Chemistry, Alaqsa University, P.O.Box 4051, Gaza, Palestine
3
Inorganic Analytical Chemistry, Department of Chemistry, Alaqsa University, P.O.Box 4051 Gaza, Palestine
4
National Institute of Research for Electrochemistry and Condensed Matter, Bucharest, Romania
5
Pharmaceutical and Medicinal Chemistry Department, Pharmaceutical and Drug Industries Research Division, National Research Center, Dokki, Cairo 12311, Egypt
*
Author to whom correspondence should be addressed.
Received: 24 January 2014 / Accepted: 24 March 2014 / Published: 24 March 2014
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Abstract

A new method is proposed for the analysis of a ternary mixture composed of clopidogrel, atorvastatin, and aspirin without prior separation steps. The method combines the advantages of the mean centering of ratio spectra and derivative spectrophotometric methods. It is based on using the difference between adjacent data points in the absorbance spectra. The principal advantage of this method is the use of absorbance data, and not derivative data; hence the signal-to-noise ratio is not diminished. The mathematical explanation of the procedure is illustrated. Beer’s law was valid in the concentration range 0.3–35 μg.mL−1 for CLOP, 0.5–30 μg.mL−1 for ATOR, and 1–40 μg.mL−1 for ASP. Mean recoveries were obtained as 100.2, 100.1, and 100.2% for CLOP, ATOR, and ASP, respectively, in the prepared synthetic mixtures. The method has been successfully applied to the simultaneous determination of ternary mixtures of aspirin, clopidogrel bisulphate, and atorvastatin calcium. The analytical characteristics of the method were calculated. The results showed that the new method is simple, rapid, accurate, and precise.
Keywords: Aspirin; Clopidogrel bisulphate; Atorvastatin calcium; DBADP; MCR Aspirin; Clopidogrel bisulphate; Atorvastatin calcium; DBADP; MCR
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

NEJEM, R.M.; ISSA, M.M.; SHANAB, A.A.; STEFAN-VAN STADEN, R.-I.; ABOUL-ENEIN, H.Y. New Chemometrics Mode Based on Adjacent Data Points’ Differences for the Simultaneous Determination of Clopidogrel, Atorvastatin, and Aspirin in their Combined Ternary Drug Formulation. Sci. Pharm. 2014, 82, 601-616.

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