A metabolite of Omeprazole, an anttiulcerative. This compound is not stable and can only be generated for short periods of time in solution. We have been unable to quantify the exact amount of 4-hydroxyomeprazole generated or measure its half-life.Form:Light-Yellow SolidMelting Point:200-201°CSolubility:DMF, DMSO, Ethanol, Methanol