Synonyms: 1H,5H,11H-[1]Benzopyrano[6,7,8-ij]quinolizin-11-one, 2,3,6,7-tetrahydro-9-(trifluoromethyl)-, 2,3,6,7-Tetrahydro-9-(trifluoromethyl)-1H,5H,11H-[1]benzopyrano[6,7,8-ij]quinolizin-11-one; C 153; C 6F; Coumarin 153; Coumarin495; Coumarin 540A; Coumarin 6F; K 153; NSC 338964; Pilot 495