A Key Intermediate in the Synthesis of Pentamidine: 4,4'-[1,5-Pentanediylbis(oxy)]bisbenzonitrile

The title compound, C₁₉H₁₈N₂O₂, has an extended conformation at the central pentanediyl chain. The molecule has approximate twofold symmetry through atom C(9). The dihedral angle between the end-to-end phenyl rings is 1.3 (1)°, indicating the overall planarity of the molecule. This facilitates stacking of the phenyl rings in the crystal.

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