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Synthetic opioid nicknamed 'pink' blamed for deaths of two 13-year-old Utah boys - The Washington Post
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Updating the list of known opioids through identification and characterization of the new opioid derivative 3,4-dichloro-N-(2-(diethylamino)cyclohexyl)-N-methylbenzamide (U-49900) | Scientific Reports
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Toxic lifespan of the synthetic opioid U-47,700 in Finland verified by re-analysis of UPLC-TOF-MS data - ScienceDirect
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