2-(5-Norborene-2,3-dicarboximido)-1,1,3,3-tetramethyluronium tetrafluoroborate125700-73-4100 % similar 2-(2,5-Dioxopyrrolidin-1-yl)-1,1,3,3-tetramethylisouronium tetrafluoroborate105832-38-059 % similar Methanaminium, (dimethylamino)[(1,3,3A,4,7,7A-hexahydro-1,3-dioxo-4,7-methano-2H-isoindol-2-yl)oxy]dimethyl-, hexafluorophosphate(1-) (1:1)208462-94-641 % similar 3A,4,7,7A-Tetrahydro-2-hydroxy-4,7-methano-1H-isoindole-1,3(2H)-dione21715-90-236 % similar 2-(2-Pyridon-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate125700-71-235 % similar N,N,N',N'-Tetramethyl-O-(3,4-dihydro-4-oxo-1,2,3-benzotriazin-3-yl)uronium tetrafluoroborate125700-69-831 % similar Dimethyl 5-norbornene-2,3-dicarboxylate5826-73-331 % similar N-Octyl bicycloheptene dicarboximide113-48-431 % similar