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Record Information
Creation Date2005-11-16 15:48:42 UTC
Update Date2016-02-11 01:02:57 UTC
Secondary Accession NumbersNone
Metabolite Identification
Common NameCoproporphyrin III
DescriptionCoproporphyrin III is a porphyrin metabolite arising from heme synthesis. Porphyrins are pigments found in both animal and plant life. Coproporphyrin III is a tetrapyrrole dead-end product from the spontaneous oxidation of the methylene bridges of coproporphynogen, arising from heme synthesis and secreted in feces and urine. Increased levels of coproporphyrins can indicate congenital erythropoietic porphyria or sideroblastic anaemia. Porphyria is a pathological state characterised by abnormalities of porphyrin metabolism and results in the excretion of large quantities of porphyrins in the urine and in extreme sensitivity to light. A large number of factors are capable of increasing porphyrin excretion, owing to different and multiple causes and etiologies: 1) the main site of the chronic hepatic porphyria disease process concentrates on the liver, 2) a functional and morphologic liver injury is almost regularly associated with this chronic porphyria, 3) the toxic form due to occupational and environmental exposure takes mainly a subclinical course. Hepatic factors includes disturbance in coproporphyrinogen metabolism, which results from inhibition of coproporphyrinogen oxidase as well as from the rapid loss from, and diminished utilization of coproporphyrinogen in the hepatocytes, which may also explain why coproporphyrin, its autoxidation product, predominates physiologically in the urine; decreased biliary excretion of coproporphyrin leading to a compensatory urinary excretion, so that the coproporphyrin ring isomer ratio (1:III) becomes a sensitive index for impaired liver function and intrahepatic cholestasis; and disturbed activity of hepatic uroporphyrinogen decarboxylase. In itself, secondary coproporphyrinuria is not associated with porphyria symptoms of a hepatologic-gastroenterologic, neurologic, or dermatologic order, even though coproporphyrinuria can occur with such symptoms. (PMID: 3327428 ).
3,8,13,17-Tetramethylporphyrin-2,7,12,18-tetrapropanoic acidChEBI
Chemical FormulaC36H38N4O8
Average Molecular Weight654.7089
Monoisotopic Molecular Weight654.268964212
IUPAC Name3-[10,14,19-tris(2-carboxyethyl)-5,9,15,20-tetramethyl-21,22,23,24-tetraazapentacyclo[³,⁶.1⁸,¹¹.1¹³,¹⁶]tetracosa-1(21),2,4,6,8(23),9,11,13,15,17,19-undecaen-4-yl]propanoic acid
Traditional Namecoproporphyrin III
CAS Registry Number14643-66-4
InChI Identifier
Chemical Taxonomy
DescriptionThis compound belongs to the class of organic compounds known as porphyrins. These are compounds containing a fundamental skeleton of four pyrrole nuclei united through the alpha-positions by four methine groups to form a macrocyclic structure.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassTetrapyrroles and derivatives
Sub ClassPorphyrins
Direct ParentPorphyrins
Alternative Parents
  • Porphyrin
  • Tetracarboxylic acid or derivatives
  • Substituted pyrrole
  • Heteroaromatic compound
  • Pyrrole
  • Azacycle
  • Carboxylic acid
  • Carboxylic acid derivative
  • Hydrocarbon derivative
  • Organooxygen compound
  • Organonitrogen compound
  • Carbonyl group
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
StatusDetected and Quantified
  • Endogenous
BiofunctionNot Available
ApplicationNot Available
Cellular locations
  • Cytoplasm
  • Mitochondria
Physical Properties
Experimental Properties
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
Water Solubility0.031 mg/mLALOGPS
pKa (Strongest Acidic)3.52ChemAxon
pKa (Strongest Basic)5.16ChemAxon
Physiological Charge-4ChemAxon
Hydrogen Acceptor Count10ChemAxon
Hydrogen Donor Count6ChemAxon
Polar Surface Area206.56 Å2ChemAxon
Rotatable Bond Count12ChemAxon
Refractivity176.26 m3·mol-1ChemAxon
Polarizability73.93 Å3ChemAxon
Number of Rings5ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectrum TypeDescriptionSplash Key
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-00kr-0000059000-ee622066b0f73e50cf91View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00kp-0000094000-ee6c72d818b957fec0b6View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-01ot-0000090000-87edb6484e1fd9c98561View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0f79-0000029000-08747adb62bb52441aebView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-052u-1000079000-d36d808ce647034f9109View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-052f-7000094000-b86bf714ce0924edc701View in MoNA
Biological Properties
Cellular Locations
  • Cytoplasm
  • Mitochondria
Biofluid Locations
  • Blood
  • Urine
Tissue Location
  • Liver
Acute Intermittent PorphyriaSMP00344Not Available
Congenital Erythropoietic Porphyria (CEP) or Gunther DiseaseSMP00345Not Available
Hereditary Coproporphyria (HCP)SMP00342Not Available
Porphyria Variegata (PV)SMP00346Not Available
Porphyrin MetabolismSMP00024map00860
Normal Concentrations
BloodDetected and Quantified0.006 (0.000 - 0.012) uMAdult (>18 years old)Not SpecifiedNormal details
UrineDetected and Quantified0.0054 +/- 0.0019 umol/mmol creatinineAdult (>18 years old)FemaleNormal details
UrineDetected and Quantified0.0051 +/- 0.0014 umol/mmol creatinineAdult (>18 years old)MaleNormal details
UrineDetected and Quantified0.0094 +/- 0.00013 umol/mmol creatinineAdult (>18 years old)BothNormal details
Abnormal Concentrations
BloodDetected and Quantified0.0045 (0.0000 - 0.0090) uMAdult (>18 years old)Not Specified
BloodDetected and Quantified 0.0044 (0.0002 - 0.0087) uMAdult (>18 years old)Not Specified
UrineDetected and Quantified0.012 +/- 0.00013 umol/mmol creatinineAdult (>18 years old)BothLiver disease details
UrineDetected and Quantified0.005 umol/mmol creatinineAdult (>18 years old)BothPorphyria cutanea tarda details
UrineDetected and Quantified0.015 +/- 0.00078 umol/mmol creatinineAdult (>18 years old)BothHereditary coproporphyria details
UrineDetected and Quantified0.043 +/- 0.00019 umol/mmol creatinineAdult (>18 years old)BothAcute intermittent porphyria details
Associated Disorders and Diseases
Disease References
Hereditary coproporphyria
  1. Zuijderhoudt FM, Koehorst SG, Kluitenberg WE, Dorresteijn-de Bok J: On accuracy and precision of a HPLC method for measurement of urine porphyrin concentrations. Clin Chem Lab Med. 2000 Mar;38(3):227-30. [10905759 ]
Liver disease
  1. Zuijderhoudt FM, Koehorst SG, Kluitenberg WE, Dorresteijn-de Bok J: On accuracy and precision of a HPLC method for measurement of urine porphyrin concentrations. Clin Chem Lab Med. 2000 Mar;38(3):227-30. [10905759 ]
  1. Hindmarsh JT, Oliveras L, Greenway DC: Biochemical differentiation of the porphyrias. Clin Biochem. 1999 Nov;32(8):609-19. [10638943 ]
Associated OMIM IDs
DrugBank IDDB04461
DrugBank Metabolite IDNot Available
Phenol Explorer Compound IDNot Available
Phenol Explorer Metabolite IDNot Available
FoodDB IDFDB005557
KNApSAcK IDNot Available
Chemspider ID16736509
KEGG Compound IDC05770
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
NuGOwiki LinkHMDB00570
Metagene LinkHMDB00570
PubChem CompoundNot Available
ChEBI ID27609
Synthesis ReferenceMinoda, Taiji; Takada, Toshihiro; Horii, Shinichi. Coproporphyrin III. Jpn. Kokai Tokkyo Koho (1979), 3 pp.
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Doss MO: Porphyrinurias and occupational disease. Ann N Y Acad Sci. 1987;514:204-18. [3327428 ]


General function:
Involved in uroporphyrinogen decarboxylase activity
Specific function:
Catalyzes the decarboxylation of four acetate groups of uroporphyrinogen-III to yield coproporphyrinogen-III.
Gene Name:
Uniprot ID:
Molecular weight:
  1. Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [17139284 ]
  2. Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. [17016423 ]
General function:
Involved in coproporphyrinogen oxidase activity
Specific function:
Key enzyme in heme biosynthesis. Catalyzes the oxidative decarboxylation of propionic acid side chains of rings A and B of coproporphyrinogen III.
Gene Name:
Uniprot ID:
Molecular weight: