Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 104: Issue 1
Thermal characterization of antimicrobial drug ornidazole and its compatibility in a solid pharmaceutical product
Authors:
Monica Felts de La Roca Soares Department of Pharmaceutical Sciences, Federal University of Pernambuco, Arthur de Sá, s/n, Recife, PE, 50740–521, Brazil

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José Lamartine Soares-Sobrinho Department of Pharmaceutical Sciences, Federal University of Pernambuco, Arthur de Sá, s/n, Recife, PE, 50740–521, Brazil

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Keyla Emanuelle Ramos de Silva Department of Pharmaceutical Sciences, Federal University of Pernambuco, Arthur de Sá, s/n, Recife, PE, 50740–521, Brazil

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Lariza Darlene Santos Alves Department of Pharmaceutical Sciences, Federal University of Pernambuco, Arthur de Sá, s/n, Recife, PE, 50740–521, Brazil

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Pablo Queiroz Lopes Pharmaceutical Sciences Department, Federal University of Paraíba, João Pessoa, PB, Brazil

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Lidiane Pinto Correia Pharmaceutical Sciences Department, Federal University of Paraíba, João Pessoa, PB, Brazil

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Fábio Santos de Souza Pharmaceutical Sciences Department, Federal University of Paraíba, João Pessoa, PB, Brazil

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Rui Oliveira Macêdo Pharmaceutical Sciences Department, Federal University of Paraíba, João Pessoa, PB, Brazil

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Pedro José. Rolim-Neto Department of Pharmaceutical Sciences, Federal University of Pernambuco, Arthur de Sá, s/n, Recife, PE, 50740–521, Brazil

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Pages:
307–313
Online Publication Date:
07 Jan 2011
Publication Date:
01 Apr 2011
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-010-1185-y
Keywords:
Ornidazole; Excipients; Purity assay; Thermal analysis; Compatibility
Restricted access

Abstract

The ornidazole drug substance presents melt at approximately 90 °C (ΔT = 85–98 °C), which is critical for its use on pharmaceutical manufacturing process. This work aimed the thermal characterization of ornidazole raw-material synthesized by three different manufacturers from India, China, and Italy, using the thermoanalytical techniques of DTA, DSC, and TG, besides the verification of its stability and compatibility as a solid pharmaceutical product by the analysis of its binary mixtures (BM) with excipients and a tablet formulation. The characterization includes the thermal decomposition kinetic investigation by Ozawa model using Arrhenius equation and drug purity determination by Van't Hoff equation. The DSC purity determination and precision were compared with results from UV–Vis spectrophotometric and liquid chromatography, showing an adequate correlation before being recommended as a general method for purity assay. The drug raw-materials presented similar quality and zero-order kinetic behavior, besides showing differences on thermal stability. The drug presented compatibility with the tested excipients since the BM studied presented melting at the same temperature range as the drug and a decomposition temperature similar to the drug for two of the BM, and at a higher temperature for the others three of the BM evaluated, which presented excipients with higher molecular structure, capable of spatial coating on the small drug molecule promoting a physical interaction pharmaceutical acceptable. The tablet was processed by wet granulation and compressed under normal conditions of pressure and temperature, maintaining the physical properties of solid drug approving the manufacturing process used. In this study, the thermal analysis was used with success as an alternative method to characterize, quantify, and perform a preformulation study.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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