Synonyms: (1H-Benzotriazol-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate;Btttfb;Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, tetrafluoroborate(1-);O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate;