1. Faculty of Pharmaceutical SciencesUniversity of Campinas Campinas São Paulo 13083‐859 Brazil
2. Campinas Poison Control Center, Faculty of Medical SciencesUniversity of Campinas Campinas São Paulo 13083‐859 Brazil
3. Institute of ChemistryFederal University of Bahia Salvador Bahia 40170‐115 Brazil
4. Institute of Analysis and Forensic Research Aracaju Sergipe 49100‐000 Brazil
5. Designer Drug Research Unit of the Intramural Research ProgramNational Institute on Drug Abuse (NIDA), National Institutes of Health Baltimore MD USA