Quality control of the paracetamol drug by chemometrics and imaging spectroscopy in the near infrared region

• Published in: Journal of molecular structure Vol. 1002; no. 1; pp. 167 - 171
• Main Authors: Baptistao, Mariana, Rocha, Werickson Fortunato de Carvalho, Poppi, Ronei Jesus
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 14.09.2011
• Subjects: Chemometrics; drugs; image analysis; Imaging spectroscopy; monitoring; multivariate analysis; near-infrared spectroscopy; Paracetamol; prediction; quality control; Paracetamol; Chemometrics; Imaging spectroscopy
• ISSN: 0022-2860; 1872-8014
• DOI: 10.1016/j.molstruc.2011.07.019

► The manuscript presents a method for the paracetamol drug quality control by infrared imaging spectroscopy and chemometrics. ► Our results enabled the study of the distribution of the drug in the tablets surface. ► It is possible to study particle size, interference detection, quality process and the global information in the samples. In this work, it was used imaging spectroscopy and chemometric tools for the development and analysis of paracetamol and excipients in pharmaceutical formulations. It was also built concentration maps to study the distribution of the drug in the tablets surface. Multivariate models based on PLS regression were developed for paracetamol and excipients concentrations prediction. For the construction of the models it was used 31 samples in the tablet form containing the active principle in a concentration range of 30.0–90.0% (w/w) and errors below to 5% were obtained for validation samples. Finally, the study of the distribution in the drug was performed through the distribution maps of concentration of active principle and excipients. The analysis of maps showed the complementarity between the active principle and excipients in the tablets. The region with a high concentration of a constituent must have, necessarily, absence or low concentration of the other one. Thus, an alternative method for the paracetamol drug quality monitoring is presented.