xanthurenic acid

xanthurenic acid
The sulfur-yellow crystals form a red compound with Millon reagent, or an intensely green one with ferrous sulfate; excreted in the urine of pyridoxine-deficient animals after the ingestion of tryptophan, and of rats fed almost exclusively with fibrin.

* * *

xanth·uren·ic acid .zanth-yə-.ren-ik- n a yellow crystalline phenolic acid C10H7NO4 closely related to kynurenic acid and excreted in the urine when tryptophan is added to the diet of experimental animals deficient in pyridoxine

* * *

xanth·u·ren·ic ac·id (zanth″u-renґik) a bicyclic aromatic compound formed as a minor catabolite of tryptophan and present in increased amounts in the urine in vitamin B6 deficiency and some disorders of tryptophan catabolism.

Medical dictionary. 2011.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Xanthurenic acid — Chembox new Reference= Merck Index , 11th Edition, 9977.] ImageFile=Xanthurenic acid.png ImageSize=150px IUPACName=8 Hydroxy 4 oxo 1 H quinoline 2 carboxylic acid OtherNames=Xanthuric acid Xanthurenate 8 Hydroxykynurenic acid 4,8… …   Wikipedia

  • xanthurenic acid — |zan(t)th(y)ə|renik noun Etymology: xanth + urenic (as in kynurenic) : a yellow crystalline phenolic acid (HO)2C9H4NCOOH closely related to kynurenic acid and excreted in the urine when tryptophan is added to the diet of experimental animals… …   Useful english dictionary

  • Kynurenic acid — Chembox new Name = Kynurenic acid ImageFile = KynurenicAcid.png ImageName = Chemical structure of kynurenic acid IUPACName = 4 oxo 1H quinoline 2 carboxylic acid OtherNames = Kinurenic acid, kynuronic acid, quinurenic acid, transtorine Section1 …   Wikipedia

  • XA — xanthurenic acid; x ray analysis …   Medical dictionary

  • XA — • xanthurenic acid; • x ray analysis …   Dictionary of medical acronyms & abbreviations

  • Plasmodium falciparum biology — Taxobox color = khaki name = Plasmodium falciparum image width = 240px image caption = Blood smear of Plasmodium falciparum regnum = Protista phylum = Apicomplexa classis = Aconoidasida ordo = Haemosporida familia = Plasmodiidae genus =… …   Wikipedia

  • Vitamin B6 — is a water soluble vitamin. Pyridoxal phosphate (PLP) is the active form and is a cofactor in many reactions of amino acid metabolism, including transamination, deamination, and decarboxylation. PLP also is necessary for the enzymatic reaction… …   Wikipedia

  • tryptophan load test — (for vitamin B6 deficiency) a single large dose of tryptophan is administered orally and a 24 hour urine sample is analyzed for xanthurenic acid, and sometimes also kynurenine, hydroxykynurenine, and kynurenic acid. If vitamin B6 deficiency… …   Medical dictionary

  • Golden silk orb-weaver — Nephila redirects here. For the use in Aramaic culture, see Orion (constellation). For the race mentioned in the Book of Genesis, see Nephilim. Golden silk orb weaver Temporal range: Middle Jurassic Recent, 165–0 Ma …   Wikipedia

  • hydroxykynureninuria — An abnormality in tryptophan metabolism, probably due to a defect in kynureninase, characterized by mild mental retardation, migraine like headaches, and urinary excretion of large amounts of kynurenine, 3 hydoxykynurenine, and xanthurenic acid …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”