Using the ProCast casting simulation software to make squeeze casting process simulation and analysis of the solidification process of the air conditioning compressor front cover and predict the location of gas volumes and shrinkage defects in the filling process. When adjusted the process parameters, volumes gas defects were eliminated, but there was still shrinkage occurs in the center. When imposed a secondary pressure on the central part, shrinkage was eliminated.

In the title compound, C19H16ClFN2O2, the pyrazole ring makes dihedral angles of 5.15 (6) and 77.72 (6)°, with the fluoro­phenyl and chloro­phenyl rings, respectively.

The crystal structure of the title compound, C18H25NO5, is stabilized by inter­molecular N—H⋯O hydrogen bonds, which form inversion dimers. The ethyl group is disordered over two positions in a 0.651 (12):0.349 (12) ratio.