N′-(But-2-enylidene)isonicotinohydrazide

In the title Schiff base compound, C10H11N3O, the pyridine ring is twisted with respect to the mean plane containing the hydrazine chain, making a dihedral angle of 31.40 (9)°. The NH group interacts with the N atom of the pyridine ring through N—H...N hydrogen bonds to build up a zigzag chain developing parallel to the (overline{1}01) plane.