4-phenyl-3,4-dihydro-2H-naphthalen-1-one

4,4-diphenylbutanoic acid

1a-phenyl-6,6a-dihydro-1H-cyclopropa[a]indene

α,α-diphenyl-β-picrylhydrazyl radical

bis(1,2,3,4-tetrahydro-4-phenyl-1,1-naphthyl)diazene