. . "Ethyl (1-(diethylamino)ethylidene)phosphoramidofluoridate" . . "A-234" . . "A-234 (nerve agent)" . . "ethyl N-[(1E)-1-(diethylamino)ethylidene]-phosphoramidofluoridate" . "A-234 (nerve agent)" . "([(2-chloro-1-methylpropoxy)fluorohydroxyphosphinyl]oxy)carbonimidic chloride fluoride" . . "N-2-diethylaminomethylacetamido-ethoxyphosphonofluoridate" . . . . .