1,4,7,9b-Tetraazaphenalene, dodecahydro-2,5,8-trimethyl- 7034-04-0 Dodecahydro-2,5,8-trimethyl-1,4,7,9b-tetraazaphenalene EINECS 230-311-9 NSC 218332 Tricrotonylidenetetramine