4-MA

Molecular structure via molpic based on CDK

Conformer []

Conformer structure via JSmol

Physical properties []
Molecular mass	149.23 g/mol ^[1]
Predicted LogP	2.1 ^[1]

Structural Identifiers []
Molecular formula	C₁₀H₁₅N ^[1]
IUPAC name	1-(4-methylphenyl)propan-2-amine ^[1]
SMILES	CC1=CC=C(C=C1)CC(C)N ^[1]
InChI	InChI=1S/C10H15N/c1-8-3-5-10(6-4-8)7-9(2)11/h3-6,9H,7,11H2,1-2H3 ^[1]
InChIKey	ZDHZDWSHLNBTEB-UHFFFAOYSA-N ^[1]

Dosing []
Elimination half-life	6–12 hours

4-Methylamphetamine

4-Methylamphetamine (also known as Aptrol, p-Methylamphetamine, p-Methylamfetamine, P-TAP, PAL-313, -α,4-Dimethylbenzeneethanamine, Benzeneethanamine, α,4-dimethyl-, (+-)-, 1-p-Tolyl-2-propylamine, 4-12-00-02834 or p-.α.-Dimethylphenethylamine) is a stimulant substance of the amphetamine class.

Chemistry

Salts []

4-Methylamphetamine is typically found in the form of its hemisulfate salt.

Stereochemistry []

(RS)-4-Methylamphetamine is a racemic mixture of the optical stereoisomers

Subjective effects []

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 1 experience reports involving 4-methylamphetamine on OpenErowid:

"Massive Visuals and Satori"

Legal status []

Canada: 4-Methylamphetamine is a Schedule I substance.
United Kingdom: 4-Methylamphetamine is a Class A substance.
Germany: 4-Methylamphetamine is a Anlage II substance.
United States: 4-Methylamphetamine is a List of Schedule II drugs (US)|Schedule II (isomer of Methamphetamine) substance.

External links []

References []

National Center for Biotechnology Information. PubChem Compound Summary for CID 199116, 4-Methylamphetamine. Accessed June 25, 2025. https://pubchem.ncbi.nlm.nih.gov/compound/199116
U.S. Food and Drug Administration; National Center for Advancing Translational Sciences. 4-Methylamphetamine. UNII: 9E273KL7HS. Global Substance Registration System. Accessed June 25, 2025. https://gsrs.ncats.nih.gov/ginas/app/beta/substances/9E273KL7HS

Anodyne