Form (III) of artemisinin: discovery and crystallographic characterization of a new high-pressure polymorph

Key Points

• This research aims to characterize a new polymorph of artemisinin under high pressure and understand its structural changes.
• Crystallographic analysis of artemisinin under high pressure
• Identification of screw axis changes
• Comparison of polymorphic forms
• Discovery of a new polymorph of artemisinin
• Change from triclinic to monoclinic structure
• Reduction of the asymmetric unit from Z' = 4 to Z' = 2