68-91-7 Trimetaphan camsilate Trimetaphan camsylate Arfonad (TN) D00612 Trimetaphan camsilate (JAN/INN) Arfonad Trimethaphan 2-oxo-1,3-bis(phenylmethyl)decahydrothieno[1',2':1,2]thieno[3,4-d]imidazol-5-ium (7,7-dimethyl-2-oxobicyclo[2.2.1]hept-1-yl)methanesulfonate