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 AJAC  Vol.2 No.2 , May 2011
Classification and Quantitative Analysis of Azithromycin Tablets by Raman Spectroscopy and Chemometrics
Abstract: Raman spectroscopy has been proven a noninvasive technique with high potential in pharmaceutical industry. In this study, micro Raman technique and chemometric tools were used for identification of azithromycin (AZM) tablets by different manufacturers and quantitative analysis of the active pharmaceutical ingredient (API) in the samples. Support vector machine (SVM), Bayes classifier and K-nearest neighbour (KNN) were employed for identification, partial least squares (PLS) regression was used for quantitative determination, and interval partial least squares (iPLS) and Monte Carlo based uninformative variable elimination (MC-UVE) methods were used to select informative variables for improving the models. The results show that all the samples can be classified into groups by manufacturers with high accuracy, and the correlation coefficient between the predicted API concentrations and reference values is as high as 0.96. Therefore, micro Raman spectroscopy coupled with chemometrics may be a fast and powerful tool for identification and quantitative determination of pharmaceutical tablets.
Cite this paper: nullY. Li, G. Du, W. Cai and X. Shao, "Classification and Quantitative Analysis of Azithromycin Tablets by Raman Spectroscopy and Chemometrics," American Journal of Analytical Chemistry, Vol. 2 No. 2, 2011, pp. 135-141. doi: 10.4236/ajac.2011.22015.
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