Pyrrolidinophenones (PPPs) are a family of compounds that feature a pyrrolidinyl group affixed to the narcotic cathinone. Many have been identified as components of designer drugs. 3,4-Methylenedioxy-α-Pyrrolidinobutiophenone (hydrochloride) shares structural features of the stimulants α-PPP and methylenedioxypyrovalerone . This product is intended to be used for forensic applications.