Chemical profiling of street cocaine from different Brazilian regions - Maldaner, Adriano Otavio; Botelho, Élvio D; Zacca, Jorge J; Melo, Raimundo C. A; Costa, Jose Ladeira da; Zancanaro, Ivomar; Oliveira, Celinalva S. L; Kasakoff, Leonardo B; Paixão, Thiago Regis Longo Cesar da (Journal of the Brazilian Chemical Society, 2016)