four-CL-PVP CRYSTAL is closely connected in composition to the popular substituted cathinone ?-PVP. ?-PVP by itself was 1st created during the 1960s. It rose to common attractiveness among cathinone aficionados in 2013 as being a material that had effects remarkably much like the stimulant MDPV (Methylenedioxypyrovalerone). Both equally of such