2,3-Dihydroxy-1,1-dimethyl-2,3-diphenyl-indan
α,α-dimethylhomophthalic acid
1-[Diazo-(diphenyl-phosphinoyl)-methyl]-1-hydroxy-3,3-dimethyl-indan-2-one
2.4-Dioxo-1.1-dimethyl-3-benzoyl-1.2.3.4-tetrahydro-naphthalin
2,4-Dioxo-1,1-dimethyl-3-phenyl-1,2,3,4-tetrahydro-naphthalin