Dimethyl 4-(methylthio)phenyl phosphate is a

chemical A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., wi ...

compound used as an

insecticide Insecticides are substances used to kill insects. They include ovicides and larvicides used against insect eggs and larvae, respectively. Insecticides are used in agriculture, medicine, industry and by consumers. Insecticides are claimed to b ...

and an

acaricide Acaricides are pesticides that kill members of the arachnid subclass ''Acari'', which includes ticks and mites. Acaricides are used both in medicine and agriculture, although the desired selective toxicity differs between the two fields. Termino ...

.Phosphoric acid, dimethyl 4-(methylthio)
at cameochemicals.noaa.gov.

References

Acetylcholinesterase inhibitors Organophosphate insecticides Phosphate esters Methyl esters Thioethers {{organic-compound-stub