Dimethoxyamphetamine
DMA, or dimethoxyamphetamine, is a series of lesser-known psychedelic drugs similar in structure to amphetamine and to trimethoxyamphetamine (TMA). They were first collectively charictarized by Alexander Shulgin in his book PiHKAL (Phenethylamines I Have Known And Loved). Little is known about their dangers or toxicity.
Positional isomers
2,4-DMA
Dosage: 60 mg or greater
Duration: "Probably short."
Effects: stimulative, amphetamine-like effects
2,5-DMA
2,5-DMA is the alpha-methyl homologue of 2C-H and could be called "DOH" under the DO naming scheme.
CAS Number: 2801-68-5
Dosage: 80–160 mg
Duration: 6–8 hours
Effects: Mydriasis, increase in heart rate
History: 2,5-DMA was first synthesized in Tuckahoe, New York by Richard Baltzly and Johannes S. Buck in 1939.
3,4-DMA
Dosage: 160 milligrams orally
Duration: unknown
Effects: Mescaline-like visuals
History: Experiments on psychiatric patients who were given 3,4-DMA at dosages of 70 mg to 700 mg by IV injection took place at the New York State Psychiatric Institute and other places in the early 1960s and were carried out by the U.S. Army's chemical warfare group while researching many potentially weaponizable drugs probably as part of the Edgewood Arsenal experiments. The Edgewood Arsenal code name for 3,4-DMA was EA-1316.