enantiotrope

plural enantiotropes

1. A crystal that can undergo a reversible transformation when heated above, or cooled below, a transition-point temperature.

   These can be differentiated on a thermal scan where an endothermic transition indicates enantiotropes and an exothermic transition indicates monotropes .

   2014, William J. Brock, Barbara Mounho, Lijie Fu, The Role of the Study Director in Nonclinical Studies, page 174

   2 more examples

   Since α-carbamazepine is a monotrope of γ-carbamazepine, and γ-carbamazepine is an enantiotrope of β-carbamazepine, the physical stability hierarchy depends on the transition temperature of β- and γ-carbamazepine.

   2004, Peter York, Uday B. Kompella, Boris Y. Shekunov, Supercritical Fluid Technology for Drug Product Development, page 288

   Differential scanning calorimetry (DSC) or differential thermal analysis (DTA) scans (Section 5.5.3) can be employed to distinguish an enantiotrope from a monotrope.

   2011, Gautam R. Desiraju, Jagadese J. Vittal, Arunachalam Ramanan, Crystal Engineering, page 112