4-Methylaminorex

4-MAR

Molecular structure via molpic based on CDK

Rotamer []

Conformer structure via 3Dmol.js

Physical properties []
Molecular mass	176.21 g/mol ^[1]
Predicted LogP	1.2 ^[1]

Structural Identifiers []
Molecular formula	C₁₀H₁₂N₂O ^[1]
IUPAC name	4-methyl-5-phenyl-4,5-dihydro-1,3-oxazol-2-amine ^[1]
SMILES	CC1C(OC(=N1)N)C2=CC=CC=C2 ^[1]
InChI	InChI=1S/C10H12N2O/c1-7-9(13-10(11)12-7)8-5-3-2-4-6-8/h2-7,9H,1H3,(H2,11,12) ^[1]
InChIKey	LJQBMYDFWFGESC-UHFFFAOYSA-N ^[1]

Pharmacokinetics[]
Elimination half-life	10 – 19 hours

4-Methylaminorex (also known as 4,5-Dihydro-4-methyl-5-phenyl-2-oxazolamine, 4-Methylaminorex, 2-Oxazoline, 2-amino-4-methyl-5-phenyl-, 7PK6VC94OU, Dtxsid30860432, 2-Amino-4-methyl-5-phenyloxazoline, 4-methylaminorex, Dtxcid70206653, U4euh or 2-Amino-4-methyl-5-phenyl-2-oxazoline) is a stimulant substance of the aminorex class.

Chemistry

Stereochemistry []

4-Methylaminorex is a racemic mixture of the diastereomers.

Stereoisomerism
(1R,2R)-4-Methylaminorex (1S,2R)-4-Methylaminorex (1R,2S)-4-Methylaminorex (1S,2S)-4-Methylaminorex
Stereoisomer enumberation with rdkit

Pharmacology

ATC Classification

Metabolism

Subjective effects []

class / Stimulant

Physical effects
Abnormal heartbeat Appetite suppression Dehydration Dry mouth Increased blood pressure Increased heart rate Increased libido Restless legs Shakiness Stamina enhancement Stimulation Teeth grinding Vasoconstriction

Cognitive effects
Analysis enhancement Cognitive euphoria Compulsive redosing Disinhibition Ego inflation Focus enhancement Increased music appreciation Mania Motivation enhancement Suggestibility suppression Thought acceleration Wakefulness

Experience reports []

There are currently 25+ experience reports involving 4-methylaminorex on Erowid:

Legal status []

Australia: 4-Methylaminorex is a S9 substance.
Brazil: 4-Methylaminorex is a F2 substance.^[2]
Canada: 4-Methylaminorex is a Schedule III substance.
United Kingdom: 4-Methylaminorex is a Class A substance.
United States: 4-Methylaminorex is a Schedule I under the "Controlled Substances Act (CSA)".
Germany: 4-Methylaminorex is a Anlage I substance.
United Nations: 4-Methylaminorex is a Schedule I drug under the "Convention on Psychotropic Substances 1971".

External links []

References []

National Center for Biotechnology Information. PubChem Compound Summary for CID 92196, 4,5-Dihydro-4-methyl-5-phenyl-2-oxazolamine. Accessed May 4, 2026. https://pubchem.ncbi.nlm.nih.gov/compound/92196
Anvisa. RDC Nº 804 - Listas de Substâncias Entorpecentes, Psicotrópicas, Precursoras e Outras sob Controle Especial. Diário Oficial da União. July 24, 2023. Accessed May 4, 2026. https://www.in.gov.br/en/web/dou/-/resolucao-rdc-n-804-de-24-de-julho-de-2023-498447451

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