Accession Number : AD1028936

Title :   Median Lethal Doses Associated with Intravenous Exposure to the Optically Pure Enantiomers of VX in Guinea Pigs

Descriptive Note : Technical Report,01 Jan 2016,01 Jul 2016

Corporate Author : Director, ECBC APG United States

Personal Author(s) : Wright,Linnzi K ; Forster,Jeffry S ; Moretz,Ruth W ; Gaviola,Bernardita I ; Renner,Julie A ; Kristovich,Robert L

Full Text :

Report Date : 01 Mar 2017

Pagination or Media Count : 20

Abstract : Stereoisomers are molecules with the same sequence of bonded atoms but a different orientation of these atoms in space, and enantiomers are non-superimposable stereoisomers. Enantiomers have the same chemical and physical properties except for their ability to rotate linearly polarized light in opposite directions. Nearly all previous research with chemical warfare nerve agents has been conducted using a mixture containing equal amounts of each stereoisomer or enantiomer, but it has been hypothesized that the stereoisomers themselves may yield different toxic responses. Thus, we estimated the 24 h median lethal doses for intravenous exposure of adult, male guinea pigs to the individual VX enantiomers, and we compared those potencies to that for a racemic mixture. The P( )-isomer of VX was 60 less toxic than the P()-isomer and 50 less toxic than the racemic mixture. However, the P( )-isomer would still be considered highly toxic based on the U.S. Environmental Protection Agency's Acute Toxicity Categories for Pesticide Products.

Descriptors :   rodents , nerve agents , laboratory animals , enantiomers , chemical warfare agents , STEREOISOMERS , LETHALITY

Subject Categories : Biochemistry
      Chemical, Biological and Radiological Warfare

Distribution Statement : APPROVED FOR PUBLIC RELEASE