[Directions in the development of postsynaptic nondepolarizing muscle relaxants with rapidly developing action].

The experiments on unconscious cats have shown that the myoparalytic effect of postsynaptic non-depolarizing myorelaxants which have a trimethylammonium cationic group develops more rapidly than that of their triethylammonium analogues. The compound IEM-1213 is given as an example of a trimethylammonium derivative with the rigid structure of the molecule having an unusual rapidly developed effect.