5,6-dichloro-9a-ethyl-7-methoxy-1,2,9,9a-tetrahydro-3H-fluoren-3-one

<(5,6-dichloro-9a-ethyl-2,3,9,9a-tetrahydro-3-oxo-1H-fluoren-7-yl)oxy>acetonitrile

2-methyl-5-hydroxy-6,7-dichloro-1-indanone

6,7-dichloro-5-hydroxy-2,2-dimethyl-indan-1-one

6,7-dichloro-2-ethyl-2,3-dihydro-5-methoxy-2-(3-oxobutyl)-1H-inden-1-one