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4 Cl-PVP CRYSTAL is closely similar in framework to the favored substituted cathinone α-PVP. Α-PVP alone was 1st designed from the sixties. It rose to popular acceptance among cathinone aficionados in 2013 as being a material that had outcomes remarkably comparable to the stimulant MDPV (Methylenedioxypyrovalerone). The two of those chemical comp