5,5'-diphenyl-1,1'-ethanediyl-bis-biguanide; hydrochloride
5,5'-bis-(2,5-diethoxy-phenyl)-1,1'-ethanediyl-bis-biguanide
5,5'-di-o-tolyl-1,1'-ethanediyl-bis-biguanide
5,5'-bis-(3,5-dimethyl-phenyl)-1,1'-ethanediyl-bis-biguanide
5,5'-bis-biphenyl-2-yl-1,1'-ethanediyl-bis-biguanide; dihydrochloride