3-Ethyl-2-[5-(3-ethyl-1,3-benzothiazol-3-ium-2-yl)penta-2,4-dienylidene]-1,3-benzothiazole

Dithiazanine is a highly potent anthelmintic, introduced in 1959 for the treatment of strongyloid worms and whipworms. However, its use is severely limited due to its toxicity. Dithiazanine iodide was associated with eight fatal cases of severe acidosis and shock between 1961 and 1964. Dithiazanine iodide has been withdrawn from the market in countries such as France in Italy, but it may remain available in others.