1965 C. S. G. Phillips & R. J. P. Williams I. xiv. 536 These equilibrium constants imply that the pH range of existence of mono-hydroxylated cations is very small whereas that of singly-charged anions is much wider.
1990 14 100/2 High performance liquid chromatographic determination of diclofenac and its monohydroxylated metabolites in biological fluids.