Creatinine

Not to be confused with creatine or Creatine kinase.
Creatinine
Names
Preferred IUPAC name
2-Amino-1-methyl-5H-imidazol-4-one[citation needed]
Other names
2-Amino-1-methylimidazol-4-ol[citation needed]
Identifiers
3D model (JSmol)
3DMet
112061
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.000.424 Edit this at Wikidata
EC Number
  • 200-466-7
KEGG
MeSH Creatinine
UNII
UN number 1789
  • InChI=1S/C4H7N3O/c1-7-2-3(8)6-4(7)5/h2,8H,1H3,(H2,5,6) checkY
    Key: BTXYOFGSUFEOLA-UHFFFAOYSA-N checkY
  • InChI=1/C4H7N3O/c1-7-2-3(8)6-4(7)5/h2H2,1H3,(H2,5,6,8)
    Key: DDRJAANPRJIHGJ-UHFFFAOYAV
  • CN1CC(=O)N=C1N
  • CN1CC(=O)NC1=N
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
138.1 J K−1 mol−1 (at 23.4 °C)
167.4 J K−1 mol−1
−240.81–239.05 kJ mol−1
−2.33539–2.33367 MJ mol−1
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
1
0
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).
☒N verify (what is checkY☒N ?)

Creatinine (/kriˈætɪnɪn, -ˌniːn/; 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]

  1. ^ a b Merck Index, 11th Edition, 2571
  2. ^ "Creatinine, anhydrous - CAS 60-27-5". Scbt.com. Archived from the original on 2016-10-22. Retrieved 2016-10-21.
  3. ^ "Creatinine tests - Mayo Clinic". www.mayoclinic.org. Archived from the original on 2022-06-05.
  4. ^ Lewis SL, Bucher L, Heitkemper MM, Harding MM, Kwong J, Roberts D (September 2016). Medical-surgical nursing : assessment and management of clinical problems (10th ed.). St. Louis, Missouri: Elsevier Health Sciences. p. 1025. ISBN 978-0-323-37143-8. OCLC 228373703.