3-Bromo-1-chloro-5,5-dimethylhydantoin126-06-7100 % similar 1,3-Dichloro-5,5-dimethylhydantoin118-52-563 % similar Dbdmh77-48-563 % similar 1-Bromo-3-chloro-5,5-dimethylhydantoin16079-88-250 % similar 1,3-Dichloro-5-ethyl-5-methylhydantoin89415-87-242 % similar Dmdm hydantoin6440-58-033 % similar