4-MeO-PV9 4-meo-pv9 for sale or (4-methoxy α-POP, MeO-α-POPand para-methoxy PV9) is a designer cathinone class stimulant drug. 4-meo-pv9 differs from pv9 in the presence of a methoxy group in the fourth, or para, position of the phenyl group.This substance is a designer drug and its properties are not fully understood and are intended f