1,6-Hexanediaminium, N,N'-di-9H-fluoren-9-yl-N,N,N',N'-tetramethyl- 1,6-Hexanediaminium,N,N'-di-9H-fluoren-9-yl-N,N,N',N'-tetramethyl 317-52-2 4844-10-4 Ammonium, hexamethylenebis(fluoren-9-yldimethyl- HEXAFLUORENIUM HSDB 3230