(+/-)-3r-isopropenyl-4c-methyl-4t-vinyl-cyclohexene

3-hydroxy-1,4,4-trimethyl-cyclopentane-1,3-dicarboxylic acid

1-ethyl-2-isopropylidene-5-methyl-cyclohexanol

4,6-dibromo-3-hydroxy-2-iodo-benzaldehyde

2,3,4,6-tetrachloro-5-ethoxybenzaldehyde