Methyl 3-(1H-indole-3-carboxamido)propionate hemihydrate

The title compound, C₁₃H₁₄N₂O₃·0.5H₂O, was synthesized by the condensation of methyl 3-amino­propionate with 3-trichloro­acetyl­indole. The two organic mol­ecules in the asymmetric unit are both close to planar, with r.m.s. deviations from the best fit plane through all of the non-H atoms of 0.004 (2) Å for mol­ecule A and 0.006 (1) Å for mol­ecule B. Also, the five- and six-membered rings of the indole systems are inclined at 1.67 (8) and 1.50 (8)° in mol­ecules A and B, respectively. In the crystal structure, the organic molecules are connected by inter­molecular N—H...O hydrogen bonds, forming chains. O—H...O and N—H...O hydrogen-bond inter­actions involving the water molecules inter­link these chains, forming double chains approximately parallel to the a axis.