Chlorazanil hydrochloride is primarily used in the field of veterinary medicine as a diuretic. It helps manage conditions related to fluid retention in animals, particularly in cases of heart failure or kidney disorders. The compound promotes the excretion of excess fluids and salts, thereby reducing swelling and improving overall health. Additionally, it is sometimes employed in research settings to study renal function and the mechanisms of diuretic action. Its effectiveness in controlling edema makes it a valuable tool in veterinary therapeutic practices.