丁二酰氯

1-[[4-oxo-4-[2-(phenylcarbamothioyl)hydrazinyl]butanoyl]amino]-3-phenylthiourea

5-[2-(2-sulfanylidene-3H-1,3,4-oxadiazol-5-yl)ethyl]-3H-1,3,4-oxadiazole-2-thione

1,2-diisocyanatoethane

4-肼基-4-氧代丁酸