+5f9 refers to a synthetic compound, often encountered as a [cannabinoid](/wiki/Cannabinoid) receptor agonist. These substances are designed to mimic the effects of natural [cannabis](/wiki/Cannabis) compounds. Its chemical structure places it among novel psychoactive substances.
+## See also
+- [Synthetic Drug](/wiki/Synthetic_Drug)
+- [Psychoactive Substance](/wiki/Psychoactive_Substance)
+- [Receptor Agonist](/wiki/Receptor_Agonist)
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