2-[(E)-2-Hy-droxy-5-(trifluoro-meth-oxy)benzyl-idene-amino]-4-methyl-phenol.

The title compound, C(15)H(12)F(3)NO(3), is a Schiff base which adopts the cis-quinoid form in the solid state. The dihedral angle between the least-squares planes of the benzene rings being 3.6 (1)°. The F atoms of the -CF(3) group are disordered over two sets of sites with refined occupancies of 0.61 (5) and 0.39 (5). An intra-molecular N-H⋯O hydrogen bond occurs. The crystal structure is stabilized by inter-molecular O-H⋯O hydrogen bonds.