Reactivation of phosphorylated acetylcholinesterase. Isomeric bisquaternary salts of pyridine aldoximes

: Mono-quaternary salts Z have been prepared from pyridine-aldoximes and 1,3-dihalogen compounds. These were used to synthesize asymmetrical bis-quaternary pyridine-oximes with three-membered bridge. The effect of reactivation of phosphorylated AChE by these substances is less than that of obidoxim (Toxogonin).