2-Amino-5-fluoro­benzoic acid

In the title compound, C₇H₆FNO₂, the mol­ecule is almost planar (r.m.s. deviation for the non-H atoms = 0.015 Å) and an intra­molecular N—H...O hydrogen bond closes an S(6) ring. In the crystal, inversion dimers linked by pairs of O—H...O hydrogen bonds generate R₂²(8) loops. Weak N—H...F hydrogen bonds, short F...F contacts [2.763 (2) Å] and aromatic π–π stacking inter­actions [centroid–centroid separation = 3.5570 (11) Å] are also observed in the crystal structure.