Ethyl 1-(2-hy­droxy­eth­yl)-2-(4-meth­oxy­phen­yl)-1H-benzimidazole-5-carboxyl­ate monohydrate

In the title mol­ecule, C(19)H(20)N(2)O(4)·H(2)O, the benzimidazole ring system is essentially planar [maximum deviation = 0.013 (11) Å] and is inclined to the 4-meth­oxy­phenyl ring by 30.98 (5)°. In the crystal, O—H⋯O and O—H⋯N hydrogen bonds involving the water mol­ecule link neighbouring mol­ecules, forming a two-dimensional network lying parallel to the bc plane. There are also C—H⋯π and π–π inter­actions present. The latter involve inversion-related benzimidazole rings with centroid–centroid distances of 3.5552 (8) and 3.7466 (8) Å.