Lexic.us

Definition of Allantoin

1. n. A crystalline, transparent, colorless substance found in the allantoic liquid of the fetal calf; -- formerly called allantoic acid and amniotic acid.

Definition of Allantoin

1. Noun. (biochemistry) A diureide of glyoxylic acid, used in various pharmaceutical and cosmetic products; or a derivative of this compound ¹

¹ Source: wiktionary.com

Definition of Allantoin

1. [n -S]

Medical Definition of Allantoin

1. Any of many nitrogen-containing organic compounds which are found in some plants and in the urine of some mammals. Allantoin is used to treat wounds and ulcers. (09 Oct 1997)

Lexicographical Neighbors of Allantoin

Literary usage of Allantoin

Below you will find example usage of this term as found in modern and/or classical literature:

1. Journal of the American Chemical Society by American Chemical Society (1912)
"The allantoin literature was reviewed in a recent article from this laboratory.3 Very little work on allantoin has appeared in the scientific press since ..."

2. Elementary Chemistry, Theoretical and Practical by George Fownes (1847)
"allantoin.—allantoin occurs ready-formed in the allantoic liquid of the foetal calf. It is produced artificially by boiling together water, uric acid, ..."

3. A Text-book of Physiological Chemistry by Olof Hammarsten, Sven Gustaf Hedin (1914)
"POHL l has found, in dogs on poisoning with hydrazine, that the liver contained allantoin and that other organs contained traces, while it does not exist ..."

4. A Dictionary of Chemistry and the Allied Branches of Other Sciences by Henry Watts (1870)
"cooling, crystals of allantoin, while urea remains in solution ... To obtain allantoin from the allantoic liquid, the liquid is evaporated to a fourth of ..."

5. Elements of Chemistry: Theoretical and Practical by William Allen Miller (1862)
"It is probable, therefore, that the usually re- rmula of allantoin should be doubled. allantoin undergoes tion in the presence of yeast, furnishing urea, ..."

6. A Text-book of Physiological Chemistry for Students of Medicine and Physicians by Charles Edmund Simon (1907)
"allantoin. allantoin is a normal constituent of the urine of man, ... The formation of allantoin from uric acid may be represented by the equation : .NH.CH. ..."

7. A Treatise on Chemistry by Henry Enfield Roscoe, Carl Schorlemmer (1884)
"Schulze and Barbieri have also found allantoin in the young leaves of the ... allantoin is formed artificially not only by oxidizing uric acid with lead ..."

8. A Text-book of Physiological Chemistry by Olof Hammarsten (1900)
"allantoin is a colorless substance often crystallizing in prisms, ... A watery allantoin solution gives no precipitate with silver nitrate alone, ..."

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