Abstract
The physicochemical properties of theophylline hydrate and anhydrous polymorphic forms I and II were evaluated using crystallographic and calorimetric method. This study has been carried out with the following techniques: differential scanning calorimetry (DSC), thermogravimetric analysis (TG) and X-ray diffractometry. The X-ray patterns on powder for investigated compounds are presented.
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Acknowledgements
The authors are grateful to Prof. S. L. Randzio for the preparation of investigated compounds. The author Piotr Szterner would like to thank the Centre of Excellence TALES (Thermodynamic Laboratory for Environmental Purposes) for the support.
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Szterner, P., Legendre, B. & Sghaier, M. Thermodynamic properties of polymorphic forms of theophylline. Part I: DSC, TG, X-ray study. J Therm Anal Calorim 99, 325–335 (2010). https://doi.org/10.1007/s10973-009-0186-1
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DOI: https://doi.org/10.1007/s10973-009-0186-1