Synonyms: 1(2H)-Phenanthrone,3,4-dihydro- (6CI,7CI,8CI); 1,2,3,4-Tetrahydro-1-oxophenanthrene;1,2,3,4-Tetrahydrophenanthren-1-one; 1-Oxo-1,2,3,4-tetrahydrophenanthrene;3,4-Dihydro-1(2H)-phenanthrenone; 3,4-Dihydro-2H-phenanthren-1-one; NSC 117487;NSC 15301