Dbdmh77-48-5100 % similar 3-Bromo-1-chloro-5,5-dimethylhydantoin126-06-763 % similar 1-Bromo-3-chloro-5,5-dimethylhydantoin16079-88-261 % similar 1,3-Dichloro-5,5-dimethylhydantoin118-52-541 % similar Dmdm hydantoin6440-58-034 % similar