Hexamethylenetetramine or methenamine, also known as hexamine or urotropin, is a heterocyclic organic compound with the formula (CH2)6N4. This white crystalline compound is highly soluble in water and polar organic solvents. Hexamethylenetetramine, also known as methenamine, is a white crystalline compound that is commonly used as a fuel additive, a curing agent for resins, and a component in pharmaceuticals. It is also used as a disinfectant and preservative in the food industry. In medicine, it is used to treat urinary tract infections and as a diagnostic tool for kidney function. Its versatility and stability make it a valuable ingredient in various industrial and medical applications.