In the title compound, C9H12N2O, the mean plane through the amide group and the benzene ring form a dihedral angle of 33.93 (7)°. An intramolecular N—H⋯O hydrogen bond is present. In the crystal, molecules are linked by N—H⋯N and N—H⋯O hydrogen bonds, forming double-stranded chains parallel to the b axis.
In the title compound, C8H9ClN2O, the dihedral angle between the benzene ring and the methylamide substituent is 68.39 (11)°. In the crystal, molecules are linked by N—H⋯O hydrogen bonds, forming layers parallel to the ab plane.
There are two molecules in the asymmetric unit of the title compound, C12H9BrF2N2O. They have very similar conformations: the dihedral angles between their pyrazole and benzene ring systems are 78.4 (3) and 78.6 (4)°. In the crystal, weak aromatic π–π stacking [centroid–centroid separation = 3.696 (5) Å] helps to establish the packing.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.