O-Ethyl methylphosphonothioic acid

O-Ethyl methylphosphonothioic acid
Names
	IUPAC name O-Ethyl hydrogen methylphosphonothioate
	Other names Methyl-phosphonothioic acid O-ethyl ester
Identifiers
CAS Number	18005-40-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	483881 ;
ECHA InfoCard	100.150.755
PubChem CID	556615;
UNII	X7A0Q688ZP ;
	InChI 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;
	SMILES S=P(O)(OCC)C;
Properties
Chemical formula	C3H9O2PS
Molar mass	140.14 g·mol−1
	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.[1]

References

Claudine McCarthy (2005). "EMPTA (O-Ethyl methylphosphonothioic acid)". In Eric Croddy, James J. Wirtz (ed.). Weapons of mass destruction: an encyclopedia of worldwide policy, technology, and history (Google Books excerpt). pp. 123–124. ISBN 1-85109-490-3.

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[1] Claudine McCarthy (2005). "EMPTA (O-Ethyl methylphosphonothioic acid)". In Eric Croddy, James J. Wirtz (ed.). Weapons of mass destruction: an encyclopedia of worldwide policy, technology, and history (Google Books excerpt). pp. 123–124. ISBN 1-85109-490-3.