Creatinine

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Creatinine
Creatinine-tautomerism-2D-skeletal.png
Creatinine-tautomerism-3D-balls.png
Names
Preferred IUPAC name
2-Amino-1-methyl-5H-imidazol-4-one[citation needit]
Seestematic IUPAC name
2-Amino-1-methyl-1H-imidazol-4-ol[citation needit]
Ither names
2-Amino-1-methylimidazol-4-ol[citation needit]
Identifiers
3D model (JSmol)
3DMet B00175
112061
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.000.424
EC Nummer 200-466-7
KEGG
MeSH Creatinine
UNII
UN nummer 1789
Properties
C4H7N3O
Molar mass 113.12 g·mol−1
Appearance White crystals
Density 1.09 g cm−3
Meltin pynt 300 °C (572 °F; 573 K)[1] (decomposes)
1 pairt per 12[1]

90 mg/ml at 20° C[2]

log P -1.76
Acidity (pKa) 12.309
Basicity (pKb) 1.688
Isoelectric pynt 11.19
Thermochemistry
Speceefic heat capacity, C 138.1 J K−1 mol−1 (at 23.4 °C)
Staundart molar
entropy
So298
167.4 J K−1 mol−1
Std enthalpy o
formation
ΔfHo298
−240.81–239.05 kJ mol−1
Std enthalpy o
combustion
ΔcHo298
−2.33539–2.33367 MJ mol−1
Hazards
EU clessification Harmful Xn
R-phrases R34, R36/37/38, R20/21/22
S-phrases S26, S36/37/39, S45, S24/25, S36
NFPA 704
Flammability code 1: Must be pre-heatit afore igneetion can occur. Flash pynt ower 93 °C (200 °F). E.g., canola ileHealth code 1: Exposur would cause irritation but anly minor residual injury. E.g., turpentineReactivity code 0: Normally stable, even unner fire exposur condeetions, an is nae reactive wi watter. E.g., liquid nitrogenSpecial hazards (white): no codeNFPA 704 four-colored diamond
1
1
0
Flash pynt 290 °C (554 °F; 563 K)
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
YesY verify (whit is YesYN ?)
Infobox references

Creatinine (frae Greek: κρέας, translit. kreas, lit. 'flesh') is a brakdoun product o creatine phosphate in muscle, an is uisually produced at a fairly constant rate bi the bouk (dependin on muscle mass).

References[eedit | eedit soorce]