Insecticidal O-(6-methyl-2-alkyl-pyrimidin-4-yl) O-alkyl thionoalkanephosphonates of the formula ##STR1## in which R stands for methyl or ethyl, R.sup.1 stands for methyl or ethyl and R.sup.2 stands for isopropyl or tert-butyl.
公式为##STR1##的杀虫O-(6-甲基-2-烷基
嘧啶-4-基)O-烷基
硫代烷基
膦酸酯,其中R代表甲基或乙基,R.sup.1代表甲基或乙基,R.sup.2代表异丙基或叔丁基。