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Tetrabutylammonium hydroxide Tetraethylammonium bromide Tetrabutylammonium bromide Tetramethylammonium chloride Tetrabutylphosphonium bromide Tetrabutylammonium azide Tetrabutylphosphonium iodide Tetrabutylammonium perchlorate Tetrabutylammonium hydrogen sulfate Tetrabutylammonium hexafluorophosphate