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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Quantification of chlorpheniramine maleate enantiomers by ultraviolet spectroscopy and chemometric methods

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Author(s):
Valderrama, P. [1] ; Romero, A. L. [1] ; Imamura, P. M. [1] ; Magalhaes, I. R. S. [2] ; Bonato, P. S. [2] ; Poppi, R. J. [1]
Total Authors: 6
Affiliation:
[1] Univ Campinas UNICAMP, Inst Chem, BR-13083970 Campinas, SP - Brazil
[2] Univ Sao Paulo, Fac Pharmaceut Sci, BR-14040903 Ribeirao Preto, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: ANALYTICAL AND BIOANALYTICAL CHEMISTRY; v. 397, n. 1, p. 181-188, MAY 2010.
Web of Science Citations: 10
Abstract

Chlorpheniramine maleate (CLOR) enantiomers were quantified by ultraviolet spectroscopy and partial least squares regression. The CLOR enantiomers were prepared as inclusion complexes with beta-cyclodextrin and 1-butanol with mole fractions in the range from 50 to 100%. For the multivariate calibration the outliers were detected and excluded and variable selection was performed by interval partial least squares and a genetic algorithm. Figures of merit showed results for accuracy of 3.63 and 2.83% (S)-CLOR for root mean square errors of calibration and prediction, respectively. The ellipse confidence region included the point for the intercept and the slope of 1 and 0, respectively. Precision and analytical sensitivity were 0.57 and 0.50% (S)-CLOR, respectively. The sensitivity, selectivity, adjustment, and signal-to-noise ratio were also determined. The model was validated by a paired t test with the results obtained by high-performance liquid chromatography proposed by the European pharmacopoeia and circular dichroism spectroscopy. The results showed there was no significant difference between the methods at the 95% confidence level, indicating that the proposed method can be used as an alternative to standard procedures for chiral analysis. (AU)