(3,4-dimethoxy-phenyl)-(4-methoxy-phenyl)-methane
3,4,4'-trimethoxybenzophenone
4-ethoxycarbonyloxy-3-methoxy-N,N'-diphenyl-benzamidine
2-(4-hydroxy-3-methoxybenzoyl)oxyethyl-4-hydroxy-3-methoxybenzoate
1,2-bis-(4-ethoxycarbonyloxy-3-methoxy-benzoyloxy)-ethane