1,4-Benzenedicarboxamide, 2-amino-N,N'-bis[4-(4,5-dihydro-1H-imidazol-2-yl)phenyl]-, dihydrochloride 73-57-4 NSC 50469 NSC50469 Tetephthalanide, 2-amino-4',4''-di-2-imidazolin-2-yl, dihydrochloride