1H-Pyrazino(3,2,1-jk)carbazol-2(3H)-one, 7,8,9,10-tetrahydro-3-methyl- 5-24-04-00059 (Beilstein Handbook Reference) 67766-94-3 7,8,9,10-Tetrahydro-3-methyl-1H-pyrazino(3,2,1-jk)carbazol-2(3H)-one BRN 0814037