1,3-Benzenedicarboxamide, N,N'-bis[4-(4,5-dihydro-1-methyl-1H-imidazol-2-yl)phenyl]-, dihydrochloride 21696-02-6 Isophthalanilide, 4',4''-bis(1-methyl-2-imidazolin-2-yl)-, dihydrochloride NSC66748