C 6H, 2,3,6,7-tetrahydro-1H,5H-quinolizino<9,9a,1-gh>coumarin, 2,3,6,7-tetrahydro-1H,5H,11H-benzopyrano<6,7,8-i,j>quinolizin-11-one, Exciton LD 490, 2,3,5,6-1H,4H-tetrahydroquinolizino[9,9a,1-gh]coumarin, coumarin-6H, 2,3,6,7-Tetrahydro-1H,5H,11H-(1)benzopyrano(6,7,8-ij)-quinolizin-11-one, EINECS 261-213-4, LD 490, 2,3,6,7-tetrahydro-1H,5H,11H-pyrano[2,3-f]pyrido[3,2,1-ij]quinolin-11-one, 2,3,5,6-Tetrahydro-1H,4H-11-oxa-3a-aza-benzo[de]anthracen-10-one