2-Imino-1-isobutyl-10-oxo-1,10-dihydro-2H-1,9,10a-triaza-anthracene-3-carbonitrile

2-Imino-1-isobutyl-10-oxo-1,10-dihydro-2H-1,9,10a-triaza-anthracene-3-carbonitrile

2-Imino-1-isobutyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2′,3′-d]pyrimidin-3-carbonitril

2-Imino-1-isobutyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2′,3′-d]pyrimidine-3-carbonitrile

2-Imino-1-isobutyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2′,3′-d]pyrimidine-3-carbonitrile

2H-Dipyrido[1,2-a:2′,3′-d]pyrimidine-3-carbonitrile, 1,5-dihydro-2-imino-1-(2-methylpropyl)-5-oxo-

2-imino-1-isobutyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2,3-d]pyrimidine-3-carbonitrile

6-imino-7-(2-methylpropyl)-2-oxo-1,7,9-triazatricyclo[8.4.0.03,8]tetradeca-3(8),4,9,11,13-pentaene-5-carbonitrile