AUTHOR=Mocarska Anna , Piorunska Karolina , Maurin Jan K. , Blazewicz Agata TITLE=The usefulness of infrared spectroscopy and X-ray powder diffraction in the analysis of falsified, illegal, and medicinal products JOURNAL=Frontiers in Chemistry VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2025.1536209 DOI=10.3389/fchem.2025.1536209 ISSN=2296-2646