Tetrabutylammonium Bromide (TBAB)
Tetraethylammonium Bromide (TEAB)
Tetraethylammonium Chloride (TEACl)
Tetramethylammonium Chloride (TMACl)
Tetrapropylammonium Bromide (TPAB)
Tributylmethylammonium Chloride (Methyltributlammonium Chloride | MTBAC)