3,4-Pr-PipVP

3,4-Pr-PipVP is a substituted cathinone derivative with stimulant effects which has been sold as a designer drug.

3,4-EtPV

3,4-Pr-PipVP was marketed online since 2021 as 3,4-EtPV, which is not covered by the controlled drug analogue laws in some jurisdictions such as Germany and Holland. However, while genuine 3,4-EtPV can be made and is now available from analytical suppliers as a reference standard, the benzocyclobutene ring system is relatively unstable and the synthesis is challenging, and all samples of supposed 3,4-EtPV that were tested proved to be 3,4-Pr-PipVP, until July 2024 when a genuine sample of 3,4-EtPV was finally identified in Germany.