AnodyneWiki

Carfentanyl

Carfentanyl

Salts []
Carfentanyl citrate

Molecular structure via molpic based on CDK

Physical properties []
Molecular mass	394.5 g/mol ^[1]
Predicted LogP	3.8 ^[1]

Structural Identifiers []
Molecular formula	C₂₄H₃₀N₂O₃ ^[1]
IUPAC name	methyl 1-(2-phenylethyl)-4-(N-propanoylanilino)piperidine-4-carboxylate ^[1]
SMILES	CCC(=O)N(C1=CC=CC=C1)C2(CCN(CC2)CCC3=CC=CC=C3)C(=O)OC ^[1]
InChI	InChI=1S/C24H30N2O3/c1-3-22(27)26(21-12-8-5-9-13-21)24(23(28)29-2)15-18-25(19-16-24)17-14-20-10-6-4-7-11-20/h4-13H,3,14-19H2,1-2H3 ^[1]
InChIKey	YDSDEBIZUNNPOB-UHFFFAOYSA-N ^[1]

Pharmacokinetics[]
Elimination half-life	7.7 hours

Carfentanyl (also known as Carfentanil, Wildnil, Carfentanilum, carfentanilo, Carfentanila, 4-carbomethoxyfentanyl, (4-carbomethoxy fentanyl), Methyl 1-phenylethyl-4-(N-phenylpropionamido)isonipecotate, R 31833 or Chebi:61084) is a opioid substance of the phenethylpiperidine class.

Chemistry

Salts []

Carfentanyl is typically found in the form of its citrate salt.

Stereochemistry []

Carfentanyl is a achiral mixture.

Subjective effects []

class / Opioid

Physical effects
Constipation Cough suppression Difficulty urinating Itchiness Nausea Pain relief Pupil constriction Respiratory depression Sedation Stomach cramp

Cognitive effects
Anxiety suppression Cognitive euphoria Compulsive redosing Increased music appreciation Thought deceleration

Visual effects
Double vision

Legal status []

Australia: Carfentanyl is a S8 substance.
Brazil: Carfentanyl is a F1 substance.
Canada: Carfentanyl is a Schedule I substance.
United Kingdom: Carfentanyl is a Class A substance.
United States: Carfentanyl is a Schedule I under the "Controlled Substances Act (CSA)".
Germany: Carfentanyl is a Anlage I substance.

External links []

References []

National Center for Biotechnology Information. PubChem Compound Summary for CID 62156, Carfentanyl. Accessed May 24, 2026. https://pubchem.ncbi.nlm.nih.gov/compound/62156
U.S. Food and Drug Administration; National Center for Advancing Translational Sciences. Carfentanyl. UNII: LA9DTA2L8F. Global Substance Registration System. Accessed May 24, 2026. https://gsrs.ncats.nih.gov/ginas/app/beta/substances/LA9DTA2L8F