We report unusual behavior of β-alanine under pressure. Depending on the protocol with which pressure was increased, the crystals of β-alanine I after transition to phase II either transformed to monoclinic phase V at approximately 6 GPa, or remained orthorhombic at least up to 8 GPa in phase II with a molecular packing very similar to phase I
Zakharov, B. A., Tumanov, N., & Boldyreva, E. V. (2015). β-Alanine under pressure: towards understanding the nature of phase transitions. CrystEngComm, 1(1), 1. https://doi.org/10.1039/c4ce02550d (Original work published 2015)