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|Type:||Artigo de periódico|
|Title:||Figures of merit for the determination of the polymorphic purity of carbamazepone by infared spectroscopy and multivariate calibration|
|Abstract:||Polymorphism is an important property in the quality control of pharmaceutical products. In this regard, partial least squares regression and the net analytical signal were used to build and validate a multivariate calibration model using diffuse reflectance infrared spectroscopy in the region of 900-1100 cm(-1) for the determination of the polymorphic purity of carbamazepine. Physical mixtures of the polymorphs were made by weight, from 80 to 100% (w/w) form III mixed with form I. Figures of merit, such as sensitivity, analytical sensitivity, selectivity, confidence limits, precision (mean, repeatability, intermediate), accuracy, and signal-to-noise ratio were calculated. Feasible results were obtained with maximum absolute error of 2% and an average error of 0.53%, indicating that the proposed methodology can be used by the pharmaceutical industry as an alternative to the X-ray diffraction (United States Pharmacopoeia method). (C) 2004 Wiley-Liss, Inc.|
partial least squares
|Editor:||John Wiley & Sons Inc|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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