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Creatinine

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Not to be confused with creatine.

Creatinine

Preferred IUPAC name[hide]

2-Amino-1-methyl-5H-imidazol-4-one[citation needed]

Systematic name[hide]

2-Amino-1-methyl-1H-imidazol-4-ol[citation needed]

Other names[hide]

2-Amino-1-methylimidazol-4-ol[citation needed]

Identifiers
CAS number 60-27-5
PubChem 26009888, 588 minor tautomer
ChemSpider 21640982
UNII AYI8EX34EU
EC number 200-466-7
UN number 1789
KEGG D03600
MeSH Creatinine
ChEBI CHEBI:16737
ChEMBL CHEMBL65567
Beilstein Reference 112061
3DMet B00175
Jmol-3D images Image 1
SMILES

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InChI

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Properties
Molecular formula C4H7N3O
Molar mass 113.12 g mol−1
Appearance White crystals
Density 1.09 g cm-3
Melting point 300 °C (decomp.)[1]

Solubility in water 1 part per 12[1]
log P -1.76
Acidity (pKa) 12.309
Basicity (pKb) 1.688
Isoelectric point 11.19
Hazards
EU classification Xn
R-phrases R34, R36/37/38, R20/21/22
S-phrases S26, S36/37/39, S45, S24/25, S36
NFPA 704

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1

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Flash point 290 °C (554 °F)
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Creatinine (from the Greek κρ?ας, flesh, pronounced, kr?-'a-t?-n?n, -?n cre·at·i·nine) is a break-down product of creatine phosphate in muscle, and is usually produced at a fairly constant rate by the body (depending on muscle mass