N,N,N',N'-tetrafluoroheptane-1,1-diamine;1-(difluoroamino)heptyl-difluoro-amine;27144-09-8;N,N,N',N'-Tetrafluoro-1,1-heptanediamine;1,1-Bis(difluoroamino)heptane
N,N,N',N'-tetrafluoroheptane-1,1-diamine