4′-Methyl-α-pyrrolidinopropiophenone (4-MePPP MPPP or MαPPP) is a stimulant drug. It is structurally very similar to α-PPP with only one added methyl group in the para position on the phenyl ring. 4-MePPP was sold in Germany as a designer drug in the late 1990s and early 2000s along with a number of other pyrrolidinophenone derivatives.
