SUMMARY
Three potential reactivators of nerve agents-inhibited acetylcholinesterase:
2-[(hydroxyimino)phenylmethyl]-1-methylpyridinium iodide 3a, 2-[(hydroxyimino)pyridin-2-ylmethyl]-1-methylpyridinium iodide 3b and 2-[(1-hydroxyimino) ethyl]-1-methylpyridinium iodide
3c were synthesized. Their reactivation potency was examined using a standard in vitro
reactivation test. A rat brain homogenate was used as the source of acetylcholinesterase. Their
reactivation potency was compared with a currently used acetylcholinesterase reactivator - 2-PAM
(pralidoxime) 4. All tested reactivators were less effective acetylcholinesterase reactivators
compared to 2-PAM. In this study, we also tested the reactivation potency of the oxime 2-PAM
against inhibition of acetylcholinesterase by sarin, cyclosarin, VX and tabun. Satisfactory results
are shown only for the reactivation sarin- and VX-inhibited acetylcholinesterase.
KEY WORDS
VX; reactivation; acetylcholinesterase; oximes; sarin; tabun; cyclosarin
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