1 Key Laboratory of Pesticide Chemistry and Applications, Ministry of Agriculture, Institute of Plant Protection Academy of Agricultural Sciences, Beijing 100193, People's Republic of China.
In the title compound, C(11)H(9)IN(4)O, the dihedral angle between the pyrazole and pyrimidine rings is 6.30 (16)°. In the crystal, weak C-H⋯O inter-actions link the mol-ecules.