1,10-Decanediaminium, N,N'-bis((2,3-dihydroxyphenyl)methyl)-N,N,N',N'-tetramethyl-, dibromide 159662-71-2 DBTMDD N,N'-(2,3-Dihydroxy-benzyl)-N,N,N',N'-tetramethyl-1,10-decanediamine