----------------------------------------- Merck Index 11th Ed. Ref RS51.M4 1989 ----------------------------------------- 3251. N,N-Dimethyltryptamine. N,N-Dimethyl-1H-indole-3-ethanamine. 3-[2-(dimethylamino)ethyl]indole. DMT. C12H16N2 - mol wt 188.26; C 76.55%, H 8.57%, N 14.88% Occurs naturally in plants with hallucinogenic properties. Isoln from the leaves of Prestonia amazonica (Benth.) Macbride (Haemadictyon amazonicum Spruce & Benth.), Apocynaceae: Hockstein, Paradies, J. Am. Chem. Soc. 79,5735(1957). Synthesis: Szara, Experimentia 12,441(1956) using the method of Specter, Anthony J. J.Am.Chem.Soc. 76,6209(1954). Relationship between hallucinogenic activity and electronic configuration: Snyder, Merril, Proc.Nat.Acad.Sci. USA 54,258(1965). H /\ N // \ / \ | || || | ||__|| \\ / \ \/ CH2CH2N(CH3)2 Crystals, mp 44.6°-46.8°. pKa 8.68 (ethanol-water). Freely sol in dil acetic and dil mineral acids. Picrate, mp 169.5°-170° Methiodide, mp 216°-217° Caution: This is a controlled substance (hallucinogen) listed in the U.S. Code of Federal Regulations, Title 21 Part 1308.11 (1985).