Synonyms: O-(1,2-DIHYDRO-2-OXO-1-PYRIDYL)-N,N,N’,N’-BIS(TETRAMETHYLENE)URONIUM HEXAFLUOROPHOSPHATE;N,N,N’,N’-BIS(TETRAMETHYLENE)-O-(1,2-DIHYDRO-2-OXO-1-PYRIDYL)URONIUM HEXAFLUOROPHOSPHATE;(1,2-Dihydro-2-oxo-1-pyridyloxy)dipyrrolidinocarbenium hexafluorophosphate;HBTPyU;O-(1,2-dihydro-2-oxo-1-pyridyl)-bis(te. methylene)uron. pf6;N,N,Nμ,Nμ-Bis(tetramethylene)-O-(1,2-dihydro-2-oxo-1-pyridyl)uronium hexafluorophosphate, (1,2-Dihydro-2-oxo-1-pyridyloxy)dipyrrolidinocarbenium hexafluorophosphate