5-MeO-pyr-T
5-MeO-pyr-T, also known as 5-methoxy-N,N-tetramethylenetryptamine or as 5-methoxy-3-(2-pyrrolidinoethyl)indole, is a serotonin receptor modulator and psychedelic drug of the tryptamine, 5-methoxytryptamine, and pyrrolidinylethylindole families. It is the 5-methoxy analogue of pyr-T and the derivative of 5-MeO-DMT and 5-MeO-DET in which their N,N-dialkyl groups have been cyclized into a pyrrolidine ring.