5-Bromoindole is a chemical compound which appears as a powder or crystal of white to greyish brown colour. It is used as a potential inhibitor of glycogen synthase kinase which is considered as a large cytosolic protein. It has a molecular formula C8H6BrN and a chemical weight of 196.04 grams per mol. The compound has a water a water partition coefficient of 3 with a melting point of 91 degree Celsius. 5-Bromoindole is purified with the help of steam distillation from a faintly alkaline solution.