Coproporphyrinogen III

Coproporphyrinogen III
Names
IUPAC name
3-[8,12,17-tris(2-carboxyethyl)-3,7,13,18-tetramethyl-5,10,15,20,21,22, 23,24-octahydroporphyrin-2-yl]propanoic acid
Identifiers
3D model (JSmol)
ChemSpider
MeSH Coproporphyrinogen+III
  • InChI=1S/C36H44N4O8/c1-17-21(5-9-33(41)42)29-14-27-19(3)22(6-10-34(43)44)30(39-27)15-28-20(4)24(8-12-36(47)48)32(40-28)16-31-23(7-11-35(45)46)18(2)26(38-31)13-25(17)37-29/h37-40H,5-16H2,1-4H3,(H,41,42)(H,43,44)(H,45,46)(H,47,48) ☒N
    Key: NIUVHXTXUXOFEB-UHFFFAOYSA-N checkY
  • InChI=1/C36H44N4O8/c1-17-21(5-9-33(41)42)29-14-27-19(3)22(6-10-34(43)44)30(39-27)15-28-20(4)24(8-12-36(47)48)32(40-28)16-31-23(7-11-35(45)46)18(2)26(38-31)13-25(17)37-29/h37-40H,5-16H2,1-4H3,(H,41,42)(H,43,44)(H,45,46)(H,47,48)
    Key: NIUVHXTXUXOFEB-UHFFFAOYAI
  • Cc1c2[nH]c(c1CCC(=O)O)Cc3c(c(c([nH]3)Cc4c(c(c([nH]4)Cc5c(c(c([nH]5)C2)C)CCC(=O)O)CCC(=O)O)C)CCC(=O)O)C
Properties
C36H44N4O8 protonated carboxylic acids
Molar mass 660.757 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Coproporphyrinogen III is a metabolic intermediate in the biosynthesis of many compounds that are critical for living organisms, such as hemoglobin and chlorophyll. It is a colorless solid.

The compound is a porphyrinogen, a class of compounds characterized by a hexahydroporphine core with various side chains. The coproporphyrinogens have the outermost hydrogen atoms of the core replaced by four methyl groups −CH3 (M) and four propionic acid groups −CH2−CH2−COOH (P). In coproporphyrogen III, the order around the outer ring is MP-MP-MP-PM. For comparison, coproporphyrinogen I has them in the sequence MP-MP-MP-MP. heme.