4-[Bis(1,5-dimethyl-1H-pyrazol-3-yl-methyl)amino]phenol monohydrate.

The crystal structure of the title compound, C18H23N5O.H2O, shows molecules containing a phenol group linked perpendicularly to a roughly planar fragment comprising two pyrazole rings. Molecules are stacked perpendicular to the [101] direction, with their phenol groups disposed alternately. The molecular packing in the crystal is stabilized by hydrogen bonding involving water molecules.