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The fused pyrazole and pyrimidine rings in the title compound, C 16 H 15 N 3 O 2 , are almost coplanar, being inclined to one another by 1.31 (12)°. The mean plane of this fused ring system is nearly coplanar with the phenyl ring, as indicated by the dihedral angle between their planes of 1.31 (12)°. The fused-ring system and the phenyl ring are nearly coplanar, as indicated by the dihedral angle of 1.27 (10)°. In the crystal, mol­ecules form inversion dimers  via  pairs of C—H⋯O hydrogen bonds. C—H⋯N inter­actions connect the dimers into a three-dimensional network. In addition, π–π contacts are observed, with centroid–centroid distances of 3.426 (2) Å.

Ethyl 7-methyl-2-phenylpyrazolo[1,5-a]pyrimidine-5-carboxylate