Alloxan (BioDeep_00000017793)

描述信息

Alloxan or mesoxalylurea is an organic compound based on a pyrimidine heterocyclic skeleton. This compound has a high affinity for water and therefore exists as the monohydrate. The compound was discovered by Justus von Liebig and Friedrich Wohler following the discovery of urea in 1828 and is one of the oldest named organic compounds that exist. The name is derived from allantoin, a product of uric acid excreted by the fetus into the allantois and oxaluric acid derived from oxalic acid and urea, found in urine. The original recipe for Alloxan was by oxidation of uric acid by nitric acid. Alloxan is a strong oxidizing agent and it forms a hemiacetal with its reduced reaction product dialuric acid (in which a carbonyl group is reduced to a hydroxyl group) which is called alloxantin. -- Wikipedia; Alloxane is a raw material for the production of the purple dye Murexide. Carl Wilhelm Scheele discovered the dye in 1776. Murexide is the product of the complex in-situ multistep reaction of alloxantin and gaseous ammonia. Murexide results from the condensation of the unisolated intermdiate uramil with alloxan, liberated during the course of the reaction. Scheele sourced uric acid from human calculi (such as kidney stones) and called the compound lithic acid. William Prout investigated the compound in 1818 and he used boa constrictor excrement with up to 90\\% ammonium acid urate. Liebig and Wohler in the nineteenth century coined the name murexide for the dye after the Trunculus Murex which is the source of the Tyrian purple of antiquity. Primo Levi in his world famous novel The Periodic Table in chapter Nitrogen considers pythons as a source for alloxane on behalf of a lipstick producer but he is turned down by the director of the Turin zoo because the zoo already has lucrative contracts with cosmetics companies (his attempts with chicken dung end in misery). -- Wikipedia [HMDB]
Alloxan or mesoxalylurea is an organic compound based on a pyrimidine heterocyclic skeleton. This compound has a high affinity for water and therefore exists as the monohydrate. The compound was discovered by Justus von Liebig and Friedrich Wohler following the discovery of urea in 1828 and is one of the oldest named organic compounds that exist. The name is derived from allantoin, a product of uric acid excreted by the fetus into the allantois and oxaluric acid derived from oxalic acid and urea, found in urine. The original recipe for Alloxan was by oxidation of uric acid by nitric acid. Alloxan is a strong oxidizing agent and it forms a hemiacetal with its reduced reaction product dialuric acid (in which a carbonyl group is reduced to a hydroxyl group) which is called alloxantin. -- Wikipedia; Alloxane is a raw material for the production of the purple dye Murexide. Carl Wilhelm Scheele discovered the dye in 1776. Murexide is the product of the complex in-situ multistep reaction of alloxantin and gaseous ammonia. Murexide results from the condensation of the unisolated intermdiate uramil with alloxan, liberated during the course of the reaction. Scheele sourced uric acid from human calculi (such as kidney stones) and called the compound lithic acid. William Prout investigated the compound in 1818 and he used boa constrictor excrement with up to 90\\% ammonium acid urate. Liebig and Wohler in the nineteenth century coined the name murexide for the dye after the Trunculus Murex which is the source of the Tyrian purple of antiquity. Primo Levi in his world famous novel The Periodic Table in chapter Nitrogen considers pythons as a source for alloxane on behalf of a lipstick producer but he is turned down by the director of the Turin zoo because the zoo already has lucrative contracts with cosmetics companies (his attempts with chicken dung end in misery). -- Wikipedia.

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