Potassium 1H-indol-3-yl sulfate (Standard) is the analytical standard of Potassium 1H-indol-3-yl sulfate (HY-W011910). This product is intended for research and analytical applications. Potassium 1H-indol-3-yl sulfate is a metabolite of tryptophan, produced by intestinal microorganisms and combined with sulfate in the liver before entering the circulatory system. Potassium 1H-indol-3-yl sulfate is a potent endogenous agonist of the aryl hydrocarbon receptor (AhR) and a urinary toxin. Potassium 1H-indol-3-yl sulfate can be used for research on kidney diseases.