Stercobilinogen

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Stercobilinogen
Image:Stercobilinogen.png
Identifiers
CAS number	17095-63-5
PubChem	9548718
MeSH	Stercobilinogen
Properties
Molecular formula	C33H48N4O6
Molar mass	596.758
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Stercobilinogen is a precursor of stercobilin. Bilirubin is pigment which results from the breakdown of the heme moiety of hemoglobin. The liver conjugates bilirubin, making it water soluble and the conjugated form is excreted in urine (urobilinogen), giving urine it's colour. In the intestine, bilirubin is converted by bacteria to stercobilinogen (fecal urobilinogen). Stercobilinogen is absorbed and excreted by either the liver or the kidney. Stercobilinogen is oxidised to stercobilin, which is responsible for the pigmentation of feces.

In early liver disease, impaired biliary excretion causes the sterocobinogen to be absorbed mostly by the kidney, and therefore, Stercobilinogen will appear in the urine in excess as urobilinogen. This is a marker of early liver disease.