11H-3-Oxo-3,4,5,6-tetrahydropyrido(3,2-a)carbazole 127040-37-3 3H-Pyrido(3,2-a)carbazol-3-one, 4,5,6,11-tetrahydro- 4,5,6,11-Tetrahydro-3H-pyrido(3,2-a)carbazol-3-one BRN 4256086