Dipentylone Crystal is also known as dipentylone. It is a substituted cathinone and contains certain entactogens. These are cathinone derivatives. These substitutions include a phenethylamine base with an alkyl link to the alpha carbon, and a attached ketone to the beta carbon. It was discovered in Sweden in 2014.Dipentylone is also known as 1-(1,3-benzodioxol-5-yl)-2-(dimethylamino)pentan-1-one.

Modifications have been made to the structure of substituted felinones, an alkaloid that is found in Khat plants. Substances that have structural similarities include pentylone and N-ethyl pentylone. Eutylone could be considered a pentylone-isomer. An isomer of N-ethyl pentylone is N,N-dimethylpentylone.