... Standards HerbicideNOMENCLATURE diquat dibromideIUPAC name 1,1'-ethylene-2,2'-bipyridyldiylium dibromide CAS RN [85-00-7 ... ); reglon* (former exception, USSR)IUPAC name 1,1'-ethylene-2,2'-bipyridyldiylium; 9,10-dihydro-8a ... name 6,7-dihydrodipyrido[1,2-a:2',1'-c]pyrazinediium CAS RN [2764-72-9 ... ] EEC no. 220-433-0 PHYSICAL CHEMISTRY diquat dibromideMol. wt. 344.1 ...