Introduction of 2C-series phenethylamines

2C is a general name for the group of psychedelic phenethylamines containing in common a phenethylamine backbone with two methoxy groups in positions 2 and 5 of the aromatic (benzene) ring and different substituents at position 4. Several countries and districts have reported 2C-series phenethylamines emerging in new 21century. This paper reviews the history, pharmacology, toxicology, patterns of use and legal status of 2C-series phenethylamines, hoping to let forensic scientists have more knowledge of them.