Tetraethylammonium bromide
(重定向自TEAB)

Tetraethylammonium bromide (TEAB) is a quaternary ammonium compound with the chemical formula C8H20NBr, often written as "Et4NBr" in the chemical literature. It has been used as the source of tetraethylammonium ions in pharmacological and physiological studies, but is also used in organic chemical synthesis (see "Chemistry" section).