Uric acid

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Uric acid
Harnsäure Ketoform.svg
Uric acid3D.png
Fluorescent uric acid.JPG
Crystals of urate in polarized light
Names
Seestematic IUPAC name
7,9-Dihydro-1H-purine-2,6,8(3H)-trione
Ither names
2,6,8-Trioxypurine; 2,6,8-Trihydroxypurine; 2,6,8-Trioxopurine; 1H-Purine-2,6,8-triol
Identifiers
Jmol-3D images Image
Image
3DMet {{{value}}}
Beilstein Reference 156158
ChEBI CHEBI:27226 N
ChEMBL ChEMBL792 YesY
ChemSpider 1142 YesY
DrugBank DB01696 YesY
ECHA InfoCard 100.000.655
EC Nummer 200-720-7
KEGG C00366 N
MeSH Uric+Acid
UNII 268B43MJ25 YesY
Properties
C5H4N4O3
Molar mass 168.11 g·mol−1
Appearance White crystals
Meltin pynt 300 °C (572 °F; 573 K)
60 mg dm−3 (at 20 °C)
log P -1.107
Acidity (pKa) 5.6
Basicity (pKb) 8.4
Thermochemistry
Speceefic heat capacity, C 166.15 J K−1 mol−1 (at 24.0 °C)
Staundart molar
entropy
So298
173.2 J K−1 mol−1
Std enthalpy o
formation
ΔfHo298
-619.69–617.93 kJ mol−1
Std enthalpy o
combustion
ΔcHo298
-1.9212–1.91956 MJ mol−1
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
N verify (whit is YesYN ?)
Infobox references

Uric acid is a heterocyclic compoond o carbon, nitrogen, oxygen, an hydrogen wi the formula C5H4N4O3.