(Z)-3-(Benzyl-carbamo-yl)prop-2-enoic acid.

The title compound, C11H11NO3, was synthesized by the reaction of maleic andydride and phenyl­methanamine. The mol­ecular conformation is stabilized by by an intra­molecular O—H⋯O hydrogen bond. In the crystal, mol­ecules are linked by inter­molecular N—H⋯O and C—H⋯O hydrogen bonds, forming a chain along the b axis.