4-CL-PVP CRYSTAL is intently similar in structure to the popular substituted cathinone α-PVP. Α-PVP alone was initially formulated from the nineteen sixties. It rose to widespread acceptance amongst cathinone aficionados in 2013 as a compound that had effects remarkably just like the stimulant MDPV (Methylenedioxypyrovalerone). Equally of the