Notes: α-Pyrrolidinobutiophenone (α-PBP, Item No. 9001195) is a synthetic cathinone that is related to the regulated stimulant α-pyrrolidinopentiophenone (Item No. 9001083). α-Pyrrolidinobutiothiophenone is an analog of α-PBP that has a thiofuran group in place of the phenyl group. The physiological and toxicological properties of this compound are unknown. This product is intended for forensic and research purposes.