Pv-8 precious stone likewise known by 1-pentanone, 1-phenyl-2-(1-pyrrolidinyl) and 2pyrrolidin-1-yl-1-phenylpentan-1-one is frequently alluded to as acting like α-PVP compound however is an exceptionally created explore compound. The sub-atomic equation is C17H26ClNO with a normal mass of 231.333298 Da and a monoisotopic mass of 231.162308 Da. The compound is a grayish precious stone strong with a virtue of ≥98% and λmax at 251 nm. The compound ought to be put away at chilled condition which will give the synthetic to remain stable and have a more drawn out timeframe of realistic usability. The CAS number is 5485-65-4.