Mephedrone therapy in vitro causes a concentration-dependent death of murine neurons . However, mephedrone toxicity to the brain endothelium has not been addressed yet. Deuterated dimethyl sulfoxide (DMSO-d6) was bought from Sigma-Aldrich (Poznań, Poland). Crystals appropriate for crystallography have been obtained by slow evaporation of DMSO-d6 solutions utilized in nuclear magnetic resonanc