Ethyl 2-(5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7-yl)pent-4-enoate

In the title mol­ecule, C13H16N4O2, the fused triazolo­pyrimidine ring system is planar. In the crystal, inversion-related C—H⋯O hydrogen bonds form dimers that are linked into chains extending along the a-axis direction by inversion-related C—H⋯π(ring) inter­actions.