In the title compound, C13H13N3O3, the pyrazolidine ring
adopts a shallow envelope conformation, with the carbonyl C
atom closest to the benzene ring as the flap [deviation of
0.126 (1) A ˚ from the plane through the remaining atoms
(r.m.s. deviation = 0.011 A ˚ )]. The dihedral angle between the
pyrazolidine ring (all atoms) and the benzene ring is
51.09 (4). An extremely short (2.08 A ˚ ) intramolecular C—
H O contact is seen. In the crystal, molecules are linked by
C—H O bonds, generating [010] chains. Extremely weak
C—H interactions are also observed.