2-Ethyl-5,6,7,8-tetrahydroanthraquinone

6-ethyl-1,2,3,4-tetrahydroanthraquinone

2-Ethyl-5,6,7,8-tetrahydro-9,10-anthraquinone

2-Ethyl-5,6,7,8-tetrahydroanthracene-9,10-dione

9,10-Anthracenedione,6-ethyl-1,2,3,4-tetrahydro-