A depolarizing neuromuscular blocking agent a partial agonist of muscle-type nAChRs activates a1B1-containing adult mouse muscle-type nAChRs expressed in X laevis oocytes (EC50 40 UM) a nondepolarizing antagonist of neuronal-type nAChRs inhibiting mouse a7- a3B2- a3B4- and a4B2-containing receptors (IC50s 7 4 405 28 and 59 UM respectively) a competitive antagonist of a4B2-containing nAChRs expressed in SH-EP1 cells (IC50 52 UM for the human receptor) inhibits electric eel AChE blocks electrically-evoked tibialis muscle twitches in anesthetized cats with ED95 values of 35 and 70 Ug/kg for cats under chloralose and ether anesthesia respectively