Clinical data
Routes of
ATC code none
Legal status
Legal status
CAS Number 749191-14-8 N
204916-89-2 (HCl)
PubChem (CID) 10012829
ChemSpider 8188403 YesY
Chemical and physical data
Formula C11H15NO2
Molar mass 193.242 g/mol
3D model (Jmol) Interactive image
 NYesY (what is this?)  (verify)

5-Methyl-3,4-methylenedioxyamphetamine (5-Methyl-MDA) is an entactogen and psychedelic designer drug of the amphetamine class. It is a ring-methylated homologue of MDA and a structural isomer of MDMA.[1]

Effects and research

Drug discrimination studies showed that 5-methyl-MDA substitutes for MDA, MMAI, and LSD, but not amphetamine, suggesting that it produces a mix of entactogen and hallucinogenic effects without any stimulant effects.[2]

5-Methyl-MDA acts as a selective serotonin releasing agent (SSRA) with IC50 values of 107nM, 11,600nM, and 1,494nM for serotonin, dopamine, and norepinephrine efflux.[1] It is over 5x more potent than MDA, with a suitable active dose possibly being around 15–25 mg.[1][2] Subsequent testing, however, has found that it is not as potent as once thought and is active at at least 100mg. 2-Methyl-MDA is also much more potent than MDA, but is not quite as potent as 5-methyl-MDA.[1] 6-methyl-MDMA (also known as Madam-6) is mostly inactive, likely due to steric hindrance.[1][3]

Recent research has used data on 2-methyl-MDA and 5-methyl-MDA to help guide computer modeling of the serotonin transporter complex.[4]


The synthesis of 5-methyl-MDA can be found online.[2]

Legal status

5-Methyl-MDA is not scheduled by the United Nations' Convention on Psychotropic Substances.[5]

United States

5-Methyl-MDA is not scheduled at the federal level in the United States,[6] but it is possible that 5-Methyl-MDA could legally be considered an analog of MDA, in which case, sales or possession could potentially be prosecuted under the Federal Analogue Act.[7]


  1. 1 2 3 4 5 Parker MA, Marona-Lewicka D, Kurrasch D, Shulgin AT, Nichols DE (March 1998). "Synthesis and pharmacological evaluation of ring-methylated derivatives of 3,4-(methylenedioxy)amphetamine (MDA)". Journal of Medicinal Chemistry. 41 (6): 1001–5. doi:10.1021/jm9705925. PMID 9526575.
  2. 1 2 3 "Synthesis of 5-Methyl-MDA - [www.rhodium.ws]".
  3. PIHKAL #98
  4. Walline CC, Nichols DE, Carroll FI, Barker EL (June 2008). "Comparative molecular field analysis using selectivity fields reveals residues in the third transmembrane helix of the serotonin transporter associated with substrate and antagonist recognition". The Journal of Pharmacology and Experimental Therapeutics. 325 (3): 791–800. doi:10.1124/jpet.108.136200. PMC 2637348Freely accessible. PMID 18354055.
  5. Convention on Psychotropic Substances, 1971
  6. §1308.11 Schedule I.
  7. Erowid Analog Law Vault : Federal Controlled Substance Analogue Act Summary
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