Zolpidem is an?imidazo[1,2-a]pyridine?compound having a 4-tolyl group at the 2-position, an N,N-dimethylcarbamoylmethyl group at the 3-position and a?methyl?substituent at the 6-position. It has a role as a central nervous system depressant, a?GABA?agonist and a sedative.