1-Heptanone, 7-(2-chloro-5-methylimidazo[1,5-b]pyridazin-7-yl)-1-phenyl- 152533-92-1 AIDS-006197 AIDS006197 Imidazo[1,5-b]pyridazine, 1-heptanone deriv. Imidazopyridazine, PhCOHex deriv.