1) Muscle relaxant 
Aminosteroids are a group of drugs with a similar structure based on a steroid nucleus. Examples are the muscle relaxants rocuronium, vecuronium, pipecuronium and pancuronium. The other major type of muscle relaxants are the Benzylisoquinolines. These include tubocurarine, atracurium, mivacurium, doxacurium, gantacurium and cisatracurium. ...