N-(Biphenyl-4-ylcarbon-yl)-N'-(2-pyridylmeth-yl)thio-urea.

In the title compound, C(20)H(17)N(3)OS, the dihedral angle between the benzene rings of the biphenyl fragment is 36.84†(9)°. The trans-cis geometry of the thio-urea unit is stabilized by intra-molecular N-H⋯O and N-H⋯N hydrogen bonds between the H atom of the cis thio-amide and the carbonyl O and pyridine N atoms, respectively. In the crystal structure, inter-molecular N-H⋯S hydrogen bonds form centrosymmetric dimers extending along the b axis.