InChI=1/C10H10ClN3O2/c1-3-16-10(15)7-5-14-8(12-7)4-6(2)9(11)13-14/h4-5H,3H2,1-2H ethyl 6-chloro-7-methylimidazo[1,2-b]pyridazine-2-carboxylate imidazo[1,2-b]pyridazine-2-carboxylic acid, 6-chloro-7-methyl-, ethyl ester