74045-37-7 N,N,N',N',N'',N'',N''',N'''-octamethyl-1,3-Disilacyclobutane-1,1,3,3-tetramine 185250-21-9 1,4-Butanediamine,N,N'-bis(4,4,5,5-tetramethyl-1,3,2-dioxaphospholan-2-yl)-N,N'-bis[3-[(4,4,5,5-tetramethyl-1,3,2-dioxaphospholan-2-yl)amino]propyl]-