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[[Fasciculus:Harnstoff.svg|thumb|Urea]]
[[Fasciculus:Urea3DUrea-3D-vdW.png|thumb|[[Molecula]] ureae]]
[[Fasciculus:Urea Synthesis Woehler.png|thumb|Experimenti Woehleriani delineatio: [[cathion]] [[ammonia]]e cum [[anion]]te [[Cyanatum|cyanati]] uream facit.]]
'''Urea''' est [[materies]] [[Chemica Organica|organica]], cuius formula est: