Quinoxaline derivative, and light-emitting element, light-emitting device, and electronic device using quinoxaline derivative

摘要

Provided is a compound represented by the following formula (G21). Further, provided is a light-emitting element including a layer including a compound represented by the following formula (G21) between a pair of electrodes. In the formula (G21), two pyridine skeletons are respectively bonded to 2-position and 3-position of a quinoxaline skeleton arylene groups.