Figures of merit for the determination of the polymorphic purity of carbamazepine by infrared spectroscopy and multivariate calibration

Journal of Pharmaceutical Sciences
Jez Willian B Braga, Ronei Jesus Poppi

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 Pharmacopoeiamethod).

References

Mar 4, 2000·Drug Development and Industrial Pharmacy·K R LeeL Katrincic
Jul 18, 2000·Journal of Pharmaceutical and Biomedical Analysis·C RustichelliS Tommasini

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Citations

Jan 27, 2016·Journal of Pharmaceutical and Biomedical Analysis·Marco Antônio Dos Santos FariasRenato Lajarim Carneiro
Mar 23, 2013·Journal of Pharmaceutical and Biomedical Analysis·Rocco CaliandroOrazio Nicolotti
Nov 15, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Tingting ShenYong He
Oct 3, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xiaodan LiuYong He

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