Home2-[4-(4-Bromophenyl)-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl]acetonitrile2-[4-(4-Bromophenyl)-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl]acetonitrile, tech