4-Meth­oxy-3-(meth­oxy­meth­yl)benzalde­hyde

In the title compound, C₁₀H₁₂O₃, the dihedral angle between the benzene ring and the meth­oxy­methyl side chain is 9.7 (2)°. The O atom of the aldehyde group and the C atom of the meth­oxy group deviate from the plane of the ring by 0.039 (3) and 0.338 (4) Å, respectively. The only inter­molecular inter­actions are very weak C—H...π inter­actions.

4-Nitro-N^2^-(pyridin-4-ylmethylidene)benzene-1,2-diamine

In the title compound, C₁₂H₁₀N₄O₂, the dihedral angle between the aromatic rings is 43.18 (16)°. The nitro group is rotated from its attached ring by 7.8 (2)° and a short intra­molecular N—H...N contact occurs. In the crystal, the mol­ecules are linked by N—H...N and C—H...O hydrogen bonds, generating a three-dimensional network.