Pyrrolidinylethylindole
Pyrrolidinylethylindoles, or 3-(2-pyrrolidinylethyl)indoles, also known as pyr-tryptamines or N,N-tetramethylenetryptamines, are a group of cyclized tryptamines in which the amine has been replaced with or cyclized into a pyrrolidine ring. They can also be thought of as derivatives of the psychedelic tryptamine N,N-diethyltryptamine (DET) in which the ethyl groups attached to the amine have been connected together to form a ring.