EPH

Molecular structure via molpic based on CDK

Conformer []

Conformer structure via 3Dmol.js

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

Structural Identifiers []
Molecular formula	C₁₅H₂₁NO₂ ^[1]
IUPAC name	ethyl 2-phenyl-2-piperidin-2-ylacetate ^[1]
SMILES	CCOC(=O)C(C1CCCCN1)C2=CC=CC=C2 ^[1]
InChI	InChI=1S/C15H21NO2/c1-2-18-15(17)14(12-8-4-3-5-9-12)13-10-6-7-11-16-13/h3-5,8-9,13-14,16H,2,6-7,10-11H2,1H3 ^[1]
InChIKey	AIVSIRYZIBXTMM-UHFFFAOYSA-N ^[1]

Ethylphenidate

Ethylphenidate (also known as 2-Piperidineacetic acid, α-phenyl-, ethyl ester, ethyl phenyl(2-piperidinyl)acetate, Ethylphenidat, Phenyl-piperidin-2-yl-acetic acid ethyl ester; hydrochloride, Methyl phenidate impurity E, ethyl phenyl(piperidin-2-yl)acetate, ZDA08855, Ethyl 2-phenyl-2-(piperidin-2-yl)acetate, C22752 or (2R,2''R)-Phenyl-piperidin-2-yl-acetic acid ethyl ester; hydrochloride) is a stimulant substance of the phenidate class.

Chemistry

Stereochemistry []

Ethylphenidate is a mixture

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

Anodyne Usernotes []
0xea / Ethylphenidate^{[hydrochloride]} via	Mild Stimulation; passed out on it on both occasions

Experience reports []

There are currently 25+ experience reports involving ethylphenidate on OpenErowid:

Legal status []

Australia: Ethylphenidate is a S8 (Controlled Drug) substance.
Brazil: Ethylphenidate is a F2 substance.^[2]
Canada: Ethylphenidate is a Schedule 3 substance.
United Kingdom: Ethylphenidate is a Class B substance.
Germany: Ethylphenidate is a Anlage II substance.
United Nations: Ethylphenidate is a Schedule II drug under the "Convention on Psychotropic Substances 1971".

External links []

References []

National Center for Biotechnology Information. PubChem Compound Summary for CID 3080846, Ethylphenidate. Accessed June 26, 2025. https://pubchem.ncbi.nlm.nih.gov/compound/3080846
Anvisa. RDC Nº 804 - Listas de Substâncias Entorpecentes, Psicotrópicas, Precursoras e Outras sob Controle Especial. Diário Oficial da União. July 24, 2023. Accessed June 26, 2025. https://www.in.gov.br/en/web/dou/-/resolucao-rdc-n-804-de-24-de-julho-de-2023-498447451