2-methylcycloheptan-1-one

Opt.-inakt. 1-Hydroxy-2-methyl-1-hydroxymethyl-cyclohexan

ethyl 4,4-diethoxybutanoate

ethyl 3-(5-nitrofuran-2-yl)prop-2-enoate

diethyl 2-(3-chlorophenyl)propanedioate