1-(5-Nitro-thiazol-2-yl)-imidazolidin-2-one 61-57-4 AIDS-108723 AIDS108723 Ambilhar BA 32644 Ciba 32644 Ciba 32644-Ba NSC136947 NTOI Niridazole Nitridazole Nitrothiamidazol Nitrothiamidazole Nitrothiazol Nitrothiazole