Tetra-n-butylammonium bromide, also known as tetrabutylammonium bromide. White crystal with deliquescence. Melting point 118 ℃. Easy to dissolve in water, alcohol, ether, and acetone, slightly soluble in benzene.Tetrabutylammonium bromide Cas: 1643-19-2, also known as TBAB; TBABr; Bu4NBr; TABA; TETRA-N-BUTYLAMMONIUM BROMIDE; Tetrabutylazanium bromide; ALIQUAT(R) 100; Tetrabutylammoniumbromid; 1-Butanaminium, N,N,N-tributyl-, bromide; IPC-TBA-BR； It can be used for the synthesis of pharmaceutical intermediates such as benzyltriethylammonium chloride, ethyl cinnamate, pseudoionone, etc., as well as for the synthesis of organic drugs such as anti infectious drugs such as bamacillin and sultamicillin. Tetrabutylammonium bromide is also used as a catalyst in the synthesis of listed drugs such as the anti diabetes drug dagelin with a new mechanism of action. In addition, it can not only be used as a phase transfer agent to synthesize tiopronin, a liver function improvement and metabolic antidote, but also can be used as a bromine agent to participate in the synthesis of muscle relaxant reversal agent Sugenglucuronium.