Demephion

{{Chembox

| ImageFile = Demephion-O.svg

| ImageCaption = Demephion-O

| ImageFile1 = Demephion-S.svg

| ImageCaption1 = Demephion-S

| IUPACName = O,O-Dimethyl O-[2-(methylsulfanyl)ethyl] phosphorothioate (demephion-O)
O,O-Dimethyl S-[2-(methylsulfanyl)ethyl] phosphorothioate (demephion-S)

| OtherNames =

|Section1={{Chembox Identifiers

| CASNo1 = 682-80-4

| CASNo1_Ref = {{cascite|correct|}}

| CASNo1_Comment = (demephion-O)

| CASNo2 = 2587-90-8

| CASNo2_Ref = {{cascite|correct|}}

| CASNo2_Comment = (demephion-S)

| UNII1_Ref = {{fdacite|correct|FDA}}

| UNII1 = 0O09494G0U

| UNII1_Comment = (demephion-O)

| UNII2_Ref = {{fdacite|correct|FDA}}

| UNII2 = 2678KW974N

| UNII2_Comment = (demephion-S)

| PubChem = 115123

| PubChem_Comment = (demephion-O)

| ChemSpiderID = 103017

| ChemSpiderID_Comment = (demephion-O)

| SMILES = S=P(OC)(OCCSC)OC

| SMILES_Comment = (demephion-O)

| StdInChI = 1S/C5H13O3PS2/c1-6-9(10,7-2)8-4-5-11-3/h4-5H2,1-3H3

| StdInChI_Comment = (demephion-O)

| StdInChIKey = IATBEFPCSHFQJS-UHFFFAOYSA-N

| PubChem1 = 17423

| PubChem1_Comment = (demephion-S)

| ChemSpiderID1 = 16480

| ChemSpiderID1_Comment = (demephion-S)

| SMILES1 = O=P(OC)(OC)SCCSC

| SMILES1_Comment = (demephion-S)

| InChI3 = 1S/C5H13O3PS2/c1-7-9(6,8-2)11-5-4-10-3/h4-5H2,1-3H3

| InChI3_Comment = (demephion-S)

| InChIKey3 = PSTWJANBJOHFQJ-UHFFFAOYSA-N

}}

|Section2={{Chembox Properties

| C=5 | H=13 | O=3 | P=1 | S=2

| Appearance =

| Density =

| MeltingPt =

| BoilingPt =

| Solubility =

}}

|Section3={{Chembox Hazards

| MainHazards =

| FlashPt =

| AutoignitionPt =

}}

}}

Demephion is an organothiophosphate insecticide. It is a mixture of two closely related structural isomers demephion-O and demephion-S.{{PPDB|2755|Name=demephion|Date=2019-01-24}}

Demephion-S is listed as an extremely hazardous substance according to the U.S. Emergency Planning and Community Right-to-Know Act.[http://ehs.uark.edu/DocumentPages/ExtremelyHazardousChemicals.pdf 40 CFR Part 355 Appendix A Extremely Hazardous Chemicals]