Wikipedia
Butylone
Butylone, also known as β-keto-N-methylbenzodioxolylbutanamine (βk-MBDB), is an entactogen, psychedelic, and stimulant psychoactive drug of the phenethylamine chemical class. It is the β-keto ( substituted cathinone) analogue of MBDB and the substituted methylenedioxyphenethylamine analogue of buphedrone.