3,4-(2'-Ketoimidazolido)-1,2-trimethylenethiophanium bromide 78339-61-4 Decahydro-2-oxo-imidazo(4,5-c)thieno(1,2-a)thiolium bromide Imidazo(4,5-c)thieno(1,2-a)thiolium, decahydro-2-oxo-, bromide NU-2356