Abstract
Isothermal heat conduction microcalorimetry was used to evaluate chemical stability of a solid drug in tablets. A variety of mixtures were compressed to flat faced tablets of 300 mg weight and 10 mm diameter. The content of drug amounted to 10%. Besides drug containing tablets, also placebo tablets as well as the non compressed mixtures were examined by microcalorimetry at 80°C. The excipient Emcompress® exhibited a substantially high exothermic heat flow that was due to a change in crystallinity. For Emcompress® containing tablets this interfering signal resulted in such a way that the calorimetric data did not reflect the drug decomposition with sufficient accuracy. In the case of the other preparations the heat flow of the excipients were low, and the calorimetric data did reflect the drug decomposition. The stability increased with increasing content of CaHPO 4, respectively, with decreasing content of water.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
