It forms a strongly eutectic mixture when  combined with choline chloride.
The concentration of this compound is quantified in a colorimetric assay under a yellow-green filter conducted at 540  nanometers that based on this compound's reaction with diacetyl monoxime. It forms a strongly eutectic mixture when  combined with choline chloride. A breath test conducted on patients with stomach ulcers exploits H. pylori's high  production of an enzyme that cleaves this compound. A reaction that causes the release of this compound is preceded by a  reaction in which (*) glutamate is converted to alpha-keto-gluterate. The synthesis of this compound, which was conducted by  treating silver cyanate with ammonium chloride, dismissed the theory of vitalism. For 10 points, name this compound in which  two primary amines are bonded to the same carbonyl, which was first synthesized by Friedrich Wohler.
The concentration of this compound is quantified in a colorimetric assay under a yellow-green filter conducted at 540  nanometers that based on this compound's reaction with diacetyl monoxime.
urea [or carbamide]