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
3D model (JSmol)
ChemSpider
  • 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
  • CCN(CC)C(=N[P](C)(F)=O)N(CC)CC
Properties
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).

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]

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.

See also

References

  1. ^ Mirzayanov VS (2008). State Secrets: An Insider's Chronicle of the Russian Chemical Weapons Program. Outskirts Press. 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" (PDF). 14 January 2020. Archived (PDF) from the original on 2020-05-01.
  3. ^ "Schedule 1". Organisation for the Prohibition of Chemical Weapons (OPCW). Retrieved 2020-07-26.

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