Etilamfetamine (Apetinil) is a stimulant drug of amphetamine chemical class. It is an N-substituted amphetamine with an ethyl group on the amphetamine backbone. It was used as an anorectic or appetite suppressant. Etilamfetamine is a psychoactive drug, which can be used as a recreational drug. Etilamfetamine has been abused as a "designer drug" alternative to amphetamine and possibly methamphetamine. It is a dopamine releasing agent.

Etilamfetamine (Apetinil):
https://drugs.ncats.io/drug/022YON1XMX

N-Ethylamphetamine (hydrochloride) Safety Data Sheet (PDF 5 pages):
https://www.caymanchem.com/msdss/11557m.pdf

It was invented in the early 20th century and was subsequently used as an anorectic or appetite suppressant in the 1950s, but was not as commonly used as other amphetamines. was largely discontinued once newer drugs such as phenmetrazine were introduced. It most likely acts primarily as a dopamine releasing agent. Its activity as a norepinephrine or serotonin releasing agent is not known. Ethylamphetamine can be used as a recreational drug and, while its prevalence is less than amphetamine's, it is still encountered as a substance taken for recreational purposes. Ethylamphetamine produces effects similar to amphetamine and methamphetamine, though its potency is less. At equipotent dosage, ethylamphetamine is subjectively less euphorigenic.