A-242

A-242
Names
	IUPAC name methyl-(bis(diethylamino)methylene)phosphonamidofluoridate
	Systematic IUPAC name 1,1,3,3-tetraethyl-2-[fluoro(methyl)phosphoryl]guanidine
Identifiers
CAS Number	2387496-14-0 ;
3D model (JSmol)	Interactive image;
PubChem CID	146586254;
	InChI InChI=1S/C10H23FN3OP/c1-6-13(7-2)10(12-16(5,11)15)14(8-3)9-4/h6-9H2,1-5H3 Key: WJDIQLITBJEMBA-UHFFFAOYSA-N;
	SMILES CCN(CC)C(=N[P](C)(F)=O)N(CC)CC;
Properties
Chemical formula	C10H23FN3OP
Molar mass	251.286 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

A-242 is an organophosphate nerve agent. It was developed in the Soviet Union under the FOLIANT program and is one of the group of compounds referred to as Novichok agents that were revealed by Vil Mirzayanov. Mirzayanov gives little specific information about A-242, stating that it is highly toxic but no figures are given to compare it to other related agents. It is reportedly a solid rather than a volatile liquid as with most nerve agents, and in order to weaponise it successfully, it had to be milled into a fine powder form that could be dispersed as a dust.^[1]

Legal status

A-242 has been added to Schedule 1 of the Annex on Chemicals of the Chemical Weapons Convention as of June 2020, and it has been explicitly named as an example compound for schedule 1.A.15.^[2]^[3] For chemicals listed in Schedule 1, the most stringent declaration and verification measures are in place combined with far-reaching limits and bans on production and use.

References

↑ State Secrets: An Insider's Chronicle of the Russian Chemical Weapons Program. Outskirts Press. 2008. ISBN 978-1-4327-2566-2.
↑ "S/1821/2019/Rev.1 Note by the Technical Secretariat Guidance for States Parties on Article VI Declaration Obligations and Inspections Following Entry Into Force of Changes to Schedule 1 of the Annex on Chemicals to the Chemical Weapons Convention". 14 January 2020. https://www.opcw.org/sites/default/files/documents/2020/01/s-1821-2019r1%28e%29.pdf.
↑ "Schedule 1" (in en). Organisation for the Prohibition of Chemical Weapons (OPCW). https://www.opcw.org/chemical-weapons-convention/annexes/annex-chemicals/schedule-1.

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[1] State Secrets: An Insider's Chronicle of the Russian Chemical Weapons Program. Outskirts Press. 2008. ISBN 978-1-4327-2566-2.

[2] "S/1821/2019/Rev.1 Note by the Technical Secretariat Guidance for States Parties on Article VI Declaration Obligations and Inspections Following Entry Into Force of Changes to Schedule 1 of the Annex on Chemicals to the Chemical Weapons Convention". 14 January 2020. https://www.opcw.org/sites/default/files/documents/2020/01/s-1821-2019r1%28e%29.pdf.

[3] "Schedule 1" (in en). Organisation for the Prohibition of Chemical Weapons (OPCW). https://www.opcw.org/chemical-weapons-convention/annexes/annex-chemicals/schedule-1.

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v t e Neurotoxins
Animal	Batrachotoxin Bestoxin Birtoxin Bungarotoxin Charybdotoxin Conotoxin Fasciculin Huwentoxin Poneratoxin Saxitoxin Tetrodotoxin Vanillotoxin Spooky toxin (SsTx) Epibatidine Zetekitoxin AB Dendrotoxin
Bacterial	Botulinum toxin Tetanospasmin
Cyanotoxins	Anatoxin-a Anatoxin-a(S) BMAA Saxitoxin
Plant	Bicuculline Penitrem A Picrotoxin Strychnine Tutin Rotenone Ginkgotoxin Cicutoxin Oenanthotoxin Thujone Volkensin
Mycotoxins	Ibotenic acid Muscarine Muscimol
Pesticides	Fenpropathrin Tetramethylenedisulfotetramine Bromethalin Crimidine Methamidophos Endosulfan Fipronil Phenylsilatrane Chlorophenylsilatrane Sulfuryl fluoride Mipafox Schradan Dimefox
Nerve agents	Cyclosarin EA-3148 Novichok agent Sarin Soman Tabun VE VG VM VP VR VX GV EA-3990 EA-4056 T-1123 Octamethylene-bis(5-dimethylcarbamoxyisoquinolinium bromide) Fluorotabun Chinese VX EA-2192
Bicyclic phosphates	TBPS TBPO IPTBO
Other	Dimethylmercury Toxopyrimidine IDPN

A-242

Topic: Chemistry

Legal status

See also

References