O-Ethyl methylphosphonothioic acid

O-Ethyl methylphosphonothioic acid

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Names
IUPAC name O-Ethyl hydrogen methylphosphonothioate
Other names Methyl-phosphonothioic acid O-ethyl ester
Identifiers
CAS Number	18005-40-8 Y
ChemSpider	483881 Y
Jmol 3D model	Interactive image
PubChem	556615
InChI InChI=1S/C3H9O2PS/c1-3-5-6(2,4)7/h3H2,1-2H3,(H,4,7) Y Key: XXNRHOAJIUSMOQ-UHFFFAOYSA-N Y InChI=1/C3H9O2PS/c1-3-5-6(2,4)7/h3H2,1-2H3,(H,4,7) Key: XXNRHOAJIUSMOQ-UHFFFAOYAH
SMILES S=P(O)(OCC)C
Properties
Chemical formula	C3H9O2PS
Molar mass	140.14 g·mol−1
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

O-Ethyl methylphosphonothioic acid (EMPTA) is an organophosphate compound. A dual-use chemical, it has constructive uses in the synthesis of pesticides and pharmaceuticals, and it is also a precursor in the synthesis of nerve agents such as Agent VM and Agent VX. The detection of EMPTA is cited as a major influence in the United States' 1998 decision to destroy the Al-Shifa pharmaceutical factory in Sudan.