A-PVP, Or alpha Pyrrolidinopentiophenone or Flakka, is a synthetic stimulant that can be converted into cathinone. In chemical structure, alpha PVP is a chemical compound consisting of a pyrrolidine ring colliding with a phenone group. As a kind of stimulant, alpha PVP can cause a short-term stimulant effect and insomnia https://www.greyymeds.com/item/34/pure-a-pvp-crystals-grams