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Uric acid is a heterocyclic compound of carbon, nitrogen, oxygen, and hydrogen with the formula C 5 H 4 N 4 O 3. It forms ions and salts known as urates and acid urates, such as ammonium acid urate. Uric acid is a product of the metabolic breakdown of purine nucleotides, and it is a normal component of urine. [1]
5-Hydroxyisourate is an organic compound that is produced by the oxidation of uric acid. The conversion is a major pathway in the antioxidant properties of urate. The conversion is catalysed by urate oxidase. [1] [2] sequence of oxidation of ureate. 5-Hydroxyisourate rearranges to allantoin.
These chemical reactions produce waste products such as carbon dioxide, water, salts, urea and uric acid. Accumulation of these wastes beyond a level inside the body is harmful to the body. The excretory organs remove these wastes. This process of removal of metabolic waste from the body is known as excretion.
Water follows thereafter. The pre-urine, along with digested food, merge in the hindgut. At this time, uric acid precipitates out, and sodium and potassium ions are actively absorbed by the rectum, along with water via osmosis. Uric acid is left to mix with faeces, which are then excreted.
Uric acid is a normal waste product made by the body, but in some people, it can accumulate at higher levels and lead to gout. Gout can be divided into four stages: Hyperuricemia.
The starting material for the reaction sequence was uric acid (8), which had been isolated from kidney stones by Carl Wilhelm Scheele in 1776. [12] Uric acid was reacted with PCl 5 to give 2,6,8-trichloropurine, which was converted with HI and PH 4 I to give 2,6-diiodopurine. The product was reduced to purine using zinc dust.
By decreasing plasma uric acid levels, help dissolve these crystals, while limiting the formation of new ones. However, the increased uric acid levels in urine can contribute to kidney stones. Thus, use of these drugs is contraindicated in persons already with a high urine concentration of uric acid (hyperuricosuria). In borderline cases ...
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
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