Pyr-T
Pyr-T, also known as N,N-tetramethylenetryptamine or as 3-(2-pyrrolidinoethyl)indole, is a lesser-known serotonin receptor modulator of the tryptamine and pyrrolidinylethylindole families. It is the cyclized derivative of diethyltryptamine (DET) in which the N,N-diethyl groups have been fused into a pyrrolidine ring.