Eutylone (also known as β-keto-1,3-benzodioxolyl-N-ethylbutanamine, bk-EBDB, and N-ethylbutylone) is a stimulant and empathogenic drug of the phenethylamine, amphetamine, phenylisobutylamine, and cathinone families which was developed in the 1960s,[3][4] which is classified as a designer drug.

[5] It was first reported to the EMCDDA in 2014 and became widespread internationally in 2019-2020 following bans on the related compound ephylone.

[9] In 2021, eutylone was the most common cathinone identified by the Drug Enforcement Administration in the United States.

[10] Sweden's public health agency suggested classifying eutylone as a hazardous substance, on September 25, 2019.

[11] In the United States Eutylone is considered a schedule 1 controlled substance as a positional isomer of Pentylone.