O-(1,2-Dihydro-2-oxo-1-pyridyl)-N,N,N‘,N‘-tetramethyluronium tetrafluoroborate, O-[2-Oxo-1(2H)-pyridyl]-N,N,N',N'-tetramethyluronium Tetrafluoroborate; O-(1,2-dihydro-2-oxo-pyridyl)-1,1,3,3-tetramethyluronium tetrafluoroborate; O-(1,2-Dihydro-2-oxo-1-pyridyl)-N,N,N',N'-tetramethyluronium Tetrafluoroborate; [dimethylamino-(2-oxopyridin-1-yl)oxymethylidene]-dimethylazanium,tetrafluoroborate; O-(2-Oxo-1(2H)Pyridyl)-N,N,N′,N′-Tetramethyluronium Tetrafluoroborate; 2-(2-Pyridon-1-yl)-1,1,3,3-tetram;