- O-Ethyl methylphosphonothioic acid
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O-Ethyl methylphosphonothioic acid 
O-Ethyl hydrogen methylphosphonothioateOther namesMethyl-phosphonothioic acid O-ethyl esterIdentifiers CAS number 18005-40-8 PubChem 556615 ChemSpider 483881 
Jmol-3D images Image 1 - S=P(O)(OCC)C
- InChI=1S/C3H9O2PS/c1-3-5-6(2,4)7/h3H2,1-2H3,(H,4,7)
Key: XXNRHOAJIUSMOQ-UHFFFAOYSA-N
InChI=1/C3H9O2PS/c1-3-5-6(2,4)7/h3H2,1-2H3,(H,4,7)
Key: XXNRHOAJIUSMOQ-UHFFFAOYAH
Properties Molecular formula C3H9O2PS Molar mass 140.14 g mol−1 
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)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.[1]
References
- ^ Claudine McCarthy (2005). "EMPTA (O-Ethyl methylphosphonothioic acid)". In Eric Croddy, James J. Wirtz (Google Books excerpt). Weapons of mass destruction: an encyclopedia of worldwide policy, technology, and history. pp. 123–124. ISBN 1-85109-490-3. http://books.google.com/books?id=ZzlNgS70OHAC&pg=PA123.
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