1-Benzyldecahydro-2-oxoimidazo(4,5-c)thieno(1,2-a)thiolium chloride 3,4-(Monobenzyl-2'-keto-imidazolido)-1,2-trimethylene-thiophanium chloride 78280-24-7 Imidazo(4,5-c)thieno(1,2-a)thiolium, decahydro-1-benzyl-2-oxo-, chloride NU-1994