异氰酸

[(E)-[4-methyl-1-(oxan-4-yl)pentylidene]amino]urea

5-(3-硝基苯基)-1,3,4-噁二唑-2-胺

5-呋喃-2-1,3,4 -恶二唑-2-氨基

Benzylaceton semicarbazon