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See also: Psilocybin
- A hallucinogenic alkaloid, C₁₂H₁₅N₂O·H₂PO₃, present in several species of Central American mushroom and producing effects similar to LSD.
- 2005: The problem of the mushroom supply was solved straight away when Leary learned from a graduate student named George Litwin that a chemist at the Sandoz Corporation, Dr. Albert Hofmann, had recently synthesized the psychoactive molecule of the mushroom, calling it psilocybin. — Martin Torgoff, Can't Find My Way Home (Simon & Schuster 2005, p. 70)