Characterization and compatibility study of desloratadine

Journal of Thermal Analysis and Calorimetry - Tập 115 - Trang 2407-2414 - 2013
Isabela P. Veronez1, Josiane S. P. Daniel1, Jerusa S. Garcia1, Marcello G. Trevisan1,2
1LACFar, Institute of Chemistry, Federal University of Alfenas (UNIFAL-MG), Alfenas, Brazil
2National Institute of Science and Technology of Bioanalytical (INCTBio), State University of Campinas, São Paulo, Brazil

Tóm tắt

Desloratadine (DL) is a selective antagonist of the histamine H1 receptor, which has been widely used to treat allergic symptoms, and stands out from other drugs in this therapeutic class because it does not cause sedative effects. In the present study, the physico-chemical properties of DL were fully characterized using six analytical techniques such as Differential Scanning Calorimetry (DSC), Thermogravimetric analysis (TG/DTG), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, Powder X-ray diffraction (PXRD), and scanning electron microscopy (SEM). The DSC curve shows a sharp endothermic event at 158.4 °C, and the TG/DTG curve presents two decomposition events between 178.4 and 451.9 °C. A compatibility study involving DL and nine pharmaceutical excipients generally used in pharmaceutical formulations was performed. Physical binary mixtures of DL with each excipient were prepared in a 1:1 (w/w) ratio. After preparation, the samples were analyzed immediately and the results reveal solid-state interaction with anhydrous lactose, microcrystalline cellulose, magnesium stearate, and stearic acid.

Tài liệu tham khảo

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