3,4-Dimeth­oxy-4′-methyl­biphen­yl

In the title compound, C₁₅H₁₆O₂, the dihedral angle between the planes of the aromatic rings is 30.5 (2)°. In the crystal, mol­ecules are linked via C—H...O hydrogen bonds and C—H...π inter­actions, forming a two-dimensional network lying parallel to (100).

3,4,5-Trimeth­oxy-4′-methyl­biphen­yl

In the title compound, C₁₆H₁₈O₃, the dihedral angle between the benzene rings is 33.4 (2)°. In the crystal, mol­ecules are packed in a zigzag arrangement along the b-axis and are inter­connected via weak C—H...O hydrogen bonds, and C—H...π inter­actions involving the meth­oxy groups and the benzene rings of neighbouring molecules.