1-(4-Ethoxybenzoyl)-4-(4-methoxyphenyl)thiosemicarbazide

The title compound, C(17)H(19)N(3)O(3)S, crystallizes with two closely similar independent molecules related by a pseudotranslation of c/2. Each molecule consists of three approximately planar moieties centred on the N(2)CS group and the two ring systems. The packing involves classical H bonds of the form N(amide)-H center dot center dot center dot S and N(hydrazine)-H center dot center dot center dot OC, together with various weak hydrogen bonds and N(hydrazine)-H center dot center dot center dot pi interactions. The overall packing is three-dimensional, but layer substructures parallel to the xz plane can be readily identified. Each molecule forms a topologically equivalent set of hydrogen-bond interactions.