1-{(E)-[4-(4-Meth-oxy-phen-yl)butan-2-yl-idene]amino}-3-methyl-thio-urea.

Two independent mol-ecules comprise the asymmetric unit of the title compound, C(13)H(19)N(3)OS, which differ in the conformations of the residues linking the thio-urea and the terminal benzene ring, as manifested in the C(m)-C(m)-C(a)-C(a) torsion angles [78.03†(16) and -93.64†(16)°, respectively; m = methyl-ene and a = aromatic]. The dihedral angles [84.40†(4) and 88.28†(5)°] formed between the thio-urea residue and the benzene ring indicate an almost orthogonal relationship. In each thio-urea residue, the N-H hydrogen atoms are anti, and the terminal N-H hydrogen atom forms an intra-molecular N-H⋯N hydrogen bond with the imine-N atom. In each case, the conformation about the imine C=N double bond [1.2812†(17) and 1.2801†(17)†à ] is E. In the crystal, the mol-ecules are connected by N-H⋯S hydrogen bonds and these are connected into four mol-ecule aggregates via N-H⋯O hydrogen bonds, which are assembled into a two-dimensional array parallel to (011) via C-H⋯π and π-π inter-actions [ring centroid-centroid distance = 3.8344†(9)†à ].