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Tetrabutylammonium hydroxide is the chemical compound with the formula (C4H9)4NOH, abbreviated Bu4NOH with the acronym TBAOH or TBAH.
T 1308 (OTTO) Tetrabutyl ammonium hydroxide 10% in methanol solution Cas 2052-49-5 - used often under phase-transfer conditions to effect alkylations and deprotonations.