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Diazolidinyl urea is produced by the chemical reaction of allantoin and formaldehyde in the presence of sodium hydroxide solution and heat. The reaction mixture is then neutralized with hydrochloric acid and evaporated: + 4 H 2 C=O →
Allantoin is a major metabolic intermediate in most organisms including animals, plants and bacteria, though not humans. It is produced from uric acid, which itself is a degradation product of nucleic acids, by action of urate oxidase (uricase). [3] [4] [5] Allantoin also occurs as a natural mineral compound (IMA symbol Aan [6]).
Allantoic acid is an organic compound with the chemical formula C 4 H 8 N 4 O 4. It is a crystalline acid obtained by hydrolysis of allantoin . In nature, allantoic acid is produced from allantoin by the enzyme allantoinase (encoded by the gene AllB ( Uniprot : P77671 ) in Escherichia coli and other bacteria ).
The hydantoin group can be found in several medicinally important compounds. [1] In pharmaceuticals, hydantoin derivatives form a class of anticonvulsants; [8] phenytoin and fosphenytoin both contain hydantoin moieties and are both used as anticonvulsants in the treatment of seizure disorders.
The absolute may be further processed to remove any impurities that are still present from the solvent extraction. Ethanol extraction is not typically used to extract fragrance from fresh plant materials; these contain large quantities of water, which will be extracted into the ethanol, although this is sometimes not a concern.
A polar aprotic solvent is a solvent that lacks an acidic proton and is polar. Such solvents lack hydroxyl and amine groups. In contrast to protic solvents, these solvents do not serve as proton donors in hydrogen bonding, although they can be proton acceptors.
Carbonated soda treatment of phytobezoars is the use of carbonated soda to try to dissolve a phytobezoar. Bezoars consist of a solid and formed mass trapped in the gastrointestinal system, usually in the stomach. [1] [2] [3] These can also form in other locations. [4] [5] Carbonated soda has been proposed for the treatment of gastric phytobezoars.
In enzymology, an allantoinase (EC 3.5.2.5) is an enzyme that catalyzes the chemical reaction (S)-allantoin + H 2 O allantoate. Thus, the two substrates of this enzyme are (S)-allantoin and H 2 O, whereas its product is allantoate.