Anodyne

Fenethylline
Generated by the Chemistry Development Kit (http://github.com/cdk)
Salts
[]
Hydrochloride
Generated by the Chemistry Development Kit (http://github.com/cdk)
Molecular structure via molpic based on CDK
Physical properties
[]
341.4 g/mol [1]
Melting point227-229 [1]
1.4 [1]
Structural Identifiers
[]
C18H23N5O2 [1]
1,3-dimethyl-7-[2-(1-phenylpropan-2-ylamino)ethyl]purine-2,6-dione [1]
CC(CC1=CC=CC=C1)NCCN2C=NC3=C2C(=O)N(C(=O)N3C)C [1]
InChI=1S/C18H23N5O2/c1-13(11-14-7-5-4-6-8-14)19-9-10-23-12-20-16-15(23)17(24)22(3)18(25)21(16)2/h4-8,12-13,19H,9-11H2,1-3H3 [1]
InChIKeyNMCHYWGKBADVMK-UHFFFAOYSA-N [1]

Fenethylline

Fenethylline (also known as Fenetylline, Phenethylline, Amfetyline, Captagon, Fenetyllin, Amphetaminoethyltheophylline, Theophyllineethylamphetamine, Fenetylinum, Fenetilina or Fitton) is a codrug, prodrug and stimulant substance of the amphetamine class.

Chemistry

Salts []

Fenethylline is typically found in the form of its hydrochloride salt.

 []

Fenethylline is a racemic mixture of the

Stereoisomers
(R)-FenethyllineGenerated by the Chemistry Development Kit (http://github.com/cdk)
(S)-FenethyllineGenerated by the Chemistry Development Kit (http://github.com/cdk)

Pharmacology

Fenethylline acts as a for:

Active metabolites
 []
Amphetamine Generated by the Chemistry Development Kit (http://github.com/cdk)
Theophylline Generated by the Chemistry Development Kit (http://github.com/cdk)

Subjective effects []

See also []

External links []

References []

  1. National Center for Biotechnology Information. PubChem Compound Summary for CID 19527, Fenethylline. Accessed July 19, 2025. https://pubchem.ncbi.nlm.nih.gov/compound/19527

  2. U.S. Food and Drug Administration; National Center for Advancing Translational Sciences. Fenethylline. UNII: YZ0N7VL5R3. Global Substance Registration System. Accessed July 19, 2025. https://gsrs.ncats.nih.gov/ginas/app/beta/substances/YZ0N7VL5R3