Dioctyldimethylammonium chloride5538-94-330 % similar Cetrimonium bromide57-09-030 % similar Dihexadecyldimethylammonium bromide70755-47-430 % similar Didecyldimethylammonium chloride7173-51-530 % similar Tridodecylmethylammonium chloride7173-54-830 % similar