Demeton-S-methyl sulfone

Demeton-S-methyl sulfone (hRf 0-5), dimethoate (h/ f 5-10), demeton-S-metlq (hRf 20-25), triazophos (h/ f 40-45), azinphos-methyl (hRf 40-45), azinphos-ethj (hRf 50-55), malathion (h/ f 60-65), parathion-methyl (hRf 75-80) and parathioo ethyl (h/ f 80-85) yielded yellow to brown chromatogram zones on a light brown bact ground, with thiophosphate insecticides with P = S double bonds appearing as brow zones and those with single P — S bonds as yellow zones. 

Fig. 1 Reflectance scan of a chromatogram track with 100 ng each substance per chromatogram, one 1 = demeton-S-methyl sulfone, 2 = dimethoate, 3 = demeton-S-methyl, 4 = triazophos, 5 = azinphos-methyl, 6 = azinphos-ethyl, 7 = malathion, 8 = parathion-methyl and 9 = para-...

Demeton oxydemeton methyl Demeton-S-methyl demeton-S-methyl sulfone... 

Dimethyl phosphite demeton-S-methyl, demeton-S-methyl sulfone, oxydemeton, trichlorfon... 

Dimethoate is split by an amidase in the mammalian liver, whereas it is activated to oxon in insects. Dimethoate may also be detoxicated by glutathione transferases or isomerized to the more toxic derivatives by heating. Demeton-S-methyl is metabolized to highly toxic compounds, such as deme-ton-S-methyl sulfoxide and sulfone in plants and animals ... 

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