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Glennon RA, Yousif M, Patrick G. 
“Stimulus properties of 1-(3,4-methylenedioxyphenyl)-2-aminopropane (MDA) analogs”. 
Pharmacol Biochem Behav. 1988;29(3):443-9.
Using a standard two-lever operant procedure, groups of rats were trained to discriminate intraperitoneal doses of the phenylisopropylamines (+)amphetamine (1.0 mg/kg) or racemic 1-(2,5-dimethoxy-4-methylphenyl)-2-aminopropane (DOM; 1.0 mg/kg) from saline using a VI 15-sec schedule of reinforcement for food reward. Once trained, the animals were administered doses of several methylenedioxy analogs (MDAs) of phenylisopropylamine including the N-monomethyl [S(+)MDMA and R(-)MDMA], N-monoethyl [(+/-)MDE, S(+)MDE, and R(-)MDE], and the N-hydroxyl [(+/-)N-OH MDA] derivatives. The DOM-stimulus did not generalize to any of these agents. The amphetamine-stimulus generalized to S(+)MDMA, S(+)N-ethylamphetamine and (+/-)N-hydroxyamphetamine, but not to R(-)MDMA, (+/-)MDE, S(+)MDE, R(-)MDE, or N-OH MDA. The present results are consistent with other reports in the literature suggesting that the psychoactive effects of certain MDA derivatives may be other than simply amphetamine- or DOM-like.
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