4-Methylmethylphenidate

4-MMPH

Molecular structure via molpic based on CDK

Physical properties []
Molecular mass	247.33 g/mol ^[1]
Predicted LogP	0.6 ^[1]

Structural Identifiers []
Molecular formula	C₁₅H₂₁NO₂ ^[1]
IUPAC name	methyl 2-(4-methylphenyl)-2-piperidin-2-ylacetate ^[1]
SMILES	CC1=CC=C(C=C1)C(C2CCCCN2)C(=O)OC ^[1]
InChI	InChI=1S/C15H21NO2/c1-11-6-8-12(9-7-11)14(15(17)18-2)13-5-3-4-10-16-13/h6-9,13-14,16H,3-5,10H2,1-2H3 ^[1]
InChIKey	WJZNCJIOIACDBR-UHFFFAOYSA-N ^[1]

4-Methylmethylphenidate (also known as Schembl15655674, Am-814/41094477 or Q4637178) is a stimulant substance of the phenidate class.

Chemistry

4-Methylmethylphenidate is a racemic mixture of the diastereomers.

Stereoisomerism
(7R,8S)-4-Methylmethylphenidate (7S,8S)-4-Methylmethylphenidate (7R,8R)-4-Methylmethylphenidate (7S,8R)-4-Methylmethylphenidate
Stereoisomer enumberation with rdkit

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

magnus / 4-Methylmethylphenidate []
Routes: Oral Insufflated Salts: Hydrochloride Notes: effects close to methylphenidat with lower potency and less clean, underwhelming

magnus / 4-Methylmethylphenidate []

Routes:

Salts:

Notes:

effects close to methylphenidat with lower potency and less clean, underwhelming

Canada: 4-Methylmethylphenidate is a Schedule III substance.
Germany: 4-Methylmethylphenidate is a Neuer-Psychoaktiver-Stoff under the "Neue-psychoaktive-Stoffe-Gesetz (NpSG)".
United Kingdom: 4-Methylmethylphenidate is a Class B substance.

National Center for Biotechnology Information. PubChem Compound Summary for CID 71308139, Schembl15655674. Accessed May 8, 2026. https://pubchem.ncbi.nlm.nih.gov/compound/71308139