Here is a video (sped up by 33x) showing one of the purifications in action. youtube.com/shorts/6gFi1...

Separation of Guaiazulene and 3-Trifluoroacetylguaiazulene via Column Chromatography

We'd love for other instructors to make use of this experiment in their courses, so please reach out if you have any questions about it! Big thanks to Paul Morgan and @amwilsonin.bsky.social at Butler University for working with me on this project.