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Names | |
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Preferred IUPAC name
2-Amino-1-methyl-5H-imidazol-4-one[citation needed] | |
Other names
2-Amino-1-methylimidazol-4-ol[citation needed]
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Identifiers | |
3D model (JSmol)
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3DMet | |
112061 | |
ChEBI | |
ChEMBL | |
ChemSpider | |
DrugBank | |
ECHA InfoCard | 100.000.424 |
EC Number |
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KEGG | |
MeSH | Creatinine |
PubChem CID
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UNII | |
UN number | 1789 |
CompTox Dashboard (EPA)
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Properties | |
C4H7N3O | |
Molar mass | 113.120 g·mol−1 |
Appearance | White crystals |
Density | 1.09 g cm−3 |
Melting point | 300 °C (572 °F; 573 K)[1] (decomposes) |
1 part per 12[1]
90 mg/mL at 20°C[2] | |
log P | -1.76 |
Acidity (pKa) | 12.309 |
Basicity (pKb) | 1.688 |
Isoelectric point | 11.19 |
Thermochemistry | |
Heat capacity (C)
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138.1 J K−1 mol−1 (at 23.4 °C) |
Std molar
entropy (S⦵298) |
167.4 J K−1 mol−1 |
Std enthalpy of
formation (ΔfH⦵298) |
−240.81–239.05 kJ mol−1 |
Std enthalpy of
combustion (ΔcH⦵298) |
−2.33539–2.33367 MJ mol−1 |
Hazards | |
NFPA 704 (fire diamond) | |
Flash point | 290 °C (554 °F; 563 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Creatinine (/kriˈætɪnɪn, -niːn/; from Ancient Greek: κρέας (kréas) 'flesh') is a breakdown product of creatine phosphate from muscle and protein metabolism. It is released at a constant rate by the body (depending on muscle mass).[3][4]