Title: Esterase-inhibiting photo-oxidation products from the organophosphorus insecticide pyrimithate Machin AF, Mundy DE, Quick MP, Janes NF Ref: Pest Sci, 5:741, 1974 : PubMed
Pyrimithate (2-dimethylamino-6-methylpyrimidin-4-yl diethyl phosphorothio-nate) decomposes when exposed to u.v. light in the presence of air to a complex mixture of products, some of which inhibit esterases directly or indirectly. Separation of the mixture by thin-layer and liquid chromatography gave five pure components in sufficient quantity for spectroscopic identification. A sixth was tentatively identified. The structures (II-VII) show that oxidative attack occurs at the dimethylamino group and at the sulphur atom.
        
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Machin AF, Mundy DE, Quick MP, Janes NF (1974) Esterase-inhibiting photo-oxidation products from the organophosphorus insecticide pyrimithate Pest Sci5: 741-748
Machin AF, Mundy DE, Quick MP, Janes NF (1974) Pest Sci5: 741-748