Bilirubin

from source

C33H36N4O6 · 584.7 g/mol

Cholerythrin · Hematoidin · Hemetoidin

What is Bilirubin?

The yellow-orange pigment left over when worn-out red blood cells are broken down. It is what makes a bruise turn yellow and what makes jaundice yellow. from source

CategoryBody

Chemical familyCarboxylic Acids Amides

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Fig. 1 · 2D structure RDKit

SMILESCC1=C(NC(=C1CCC(=O)O)CC2=C(C(=C(N2)/C=C\3/C(=C(C…97 characters

Where you'll find it

Your own body makes this one. It is not an ingredient you buy. See the rest of the body group.

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Where Bilirubin leads

Sources & methodology

PubChem CID: 5280352
Wikidata: Q104219
Structure: PubChem → RDKit
Similar molecules: MoleculeFinder fingerprint similarity
Data refreshed: October 19, 2026

How MoleculeFinder sources and labels its data