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Center for Forensic Science Research and Education. (2025) An update on the presence of BTMPS in the drug supply and the discovery of tetramethylfentanyl-related substances. United States: Center for Forensic Science Research and Education.
Center for Forensic Science Research and Education. (2023) Cannabinoid – NPS Discovery new drug monograph. United States: Center for Forensic Science Research and Education.
Center for Forensic Science Research and Education. (2025) Novel psychoactive substances (NPS) trend reports.
Center for Forensic Science Research and Education. (2025) NPS discovery dashboard [United States].