2C-B-PYR
2C-B-PYR, also known as 3-(4-bromo-2,5-dimethoxyphenyl)pyrrolidine, is a serotonin receptor modulator of the phenethylamine family. It is a cyclized phenethylamine, more specifically a cyclized pyrrolidine derivative of the psychedelic drug 2C-B, and is closely related to ZC-B (azetidine) and 2C-B-3PIP (piperidine).