<http://dbpedia.org/resource/Urea>	<http://www.w3.org/2000/01/rdf-schema#comment>	"Urea or carbamide is an organic compound with the chemical formula CO(NH2)2. The molecule has two \u2014NH2 groups joined by a carbonyl (C=O) functional group.Urea serves an important role in the metabolism of nitrogen-containing compounds by animals, and is the main nitrogen-containing substance in the urine of mammals. It is colorless, odorless solid, highly soluble in water, and practically non-toxic (LD50 is 15 g/kg for rats).  Dissolved in water, it is neither acidic nor alkaline."@en .
<http://dbpedia.org/resource/Urea>	<http://dbpedia.org/ontology/iupacName>	"Urea"@en .
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