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CAS 635-65-4

CAS 635-65-4 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 635-65-4
CAS 635-65-4PubChem CID 5280352

Bilirubin

Bilirubin IXalpha is a member of the class of biladienes that is a linear tetrapyrrole with the dipyrrole units being of both exovinyl and endovinyl type. A product of heme degradation, it is produced in the reticuloendothelial system by the reduction of biliverdin and transported to the liver as a complex with serum albumin. It has a role as an antioxidant, a mouse metabolite and a human metabolite. It is a dicarboxylic acid and a member of biladienes. It contains a 24G7 epitope. It is a conjugate acid of a bilirubin(2-). — ChEBI

IUPAC name
3-[2-[[3-(2-carboxyethyl)-5-[(Z)-(3-ethenyl-4-methyl-5-oxopyrrol-2-ylidene)methyl]-4-methyl-1H-pyrrol-2-yl]methyl]-5-[(Z)-(4-ethenyl-3-methyl-5-oxopyrrol-2-ylidene)methyl]-4-methyl-1H-pyrrol-3-yl]propanoic acid
Molecular formula
C33H36N4O6
Molecular weight
584.7 g/mol
Exact mass
584.26348488 Da
XLogP3
2.9
Topological polar surface area
164.0 Ų
Hydrogen-bond donors
6
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
0

Also known as

HematoidinHemetoidinBilirubin IX-alphaCholerythrinBilirubin IXalphaBilirubin IX alpha2,17-diethenyl-1,10,19,22,23,24-hexahydro-3,7,13,18-tetramethyl-1,19-dioxo-21H-biline-8,12-dipropanoic acidBilirubin test
16 more reported names
RFM9X3LJ49NSC-2668521H-Biline-8,12-dipropanoic acid, 2,17-diethenyl-1,10,19,22,23,24-hexahydro-3,7,13,18-tetramethyl-1,19-dioxo-CHEBI:169901,10,19,22,23,24-hexahydro-2,7,13,17-tetramethyl-1,19-dioxo-3,18-divinylbiline-8,12-dipropionic aciddelta BilirubinBilirubinate, CalciumCalcium Salt BilirubinDisodium Salt BilirubinSalt Bilirubin, CalciumMonosodium Salt BilirubinRefChem:568345211-239-7(4z,15z)-bilirubin ixalphaBilirubin IX.alpha.Disodium bilirubinate
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 635-65-4

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How CAS 635-65-4 is used on this site

CAS 635-65-4 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 635-65-4 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.