Abstract
The thermal stimulated current measurement was used as an innovative analytical equipment to evaluate the polymorphic properties of terfenadine and Compound A, being developed by Takeda Pharmaceutical Company, Limited. At first, terfenadine, which is known to have polymorphs, was used as a model sample for thermally stimulated current (TSC) analyses. The TSC curves of amorphous and two polymorphs were distinctly different from each other. Therefore, it was considered that TSC measurement could be a useful technique to evaluate the crystalline properties of drug substances. The polymorphs of compound A were difficult to distinguish the characteristics of polymorphs from conventional powder X-ray diffractometry and also differential scanning calorimetry. Forms A and B of compound A were clearly differentiated by the thermal stimulated current properties that were adequate to characterize each form. Thus, it was shown that TSC was extremely useful and powerful tool for identification of complicated polymorphs, which were not distinguished by conventional methods.
Sign-in/Register to access full text options 
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.
