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Bilirubin (CAS 635-65-4)

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Synonym:Hematoidin; Bilirubin IX-alpha; Hemetoidin; Principal bile pigment
Application:A principal pigment of bile and one of the major end products of hemoglobin decomposition
CAS Number:635-65-4
Molecular Weight:584.66
Molecular Formula:C33H36N4O6
Refer to Certificate of Analysis for lot specific data (including water content).
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Bilirubin sc-202499 1 g $225
Bilirubin is a principal pigment of bile and one of the major end products of hemoglobin decomposition. It contains conjugated double bonds and reactive hydrogen atoms. Serves as a physiological antioxidant. Reported to cross the blood-brain barrier and exert significant antioxidant effects in the brain. This product corresponds to the unconjugated form. Extinction coefficient (454 nm, CHCl3):59,100-62,300 M-1cm-1.
Technical Information
Physical State:Solid
Solubility:Soluble in chloroform (10 mg/ml), benzene, chlorobenzene, carbon disulfide, alkaline solutions, aqueous acid, ethanol (slightly), and ether (slightly). Insoluble in water.
Storage:Store at room temperature
Melting Point:192° C
Boiling Point:925.16° C at 760 mmHg (Predicted)
Density:1.37 g/cm3 (Predicted)
Refractive Index:n20D 1.72 (Predicted)
pK Values:pKa: 4.62, pKb: 2.31
Safety and Reference Information
WGK Germany:2
PubChem CID:5280352
Merck Index:14: 1218
MDL Number:MFCD00005499
EC Number:211-239-7
Beilstein Registry:74376
SMILES:CC1=C(NC(=C1CCC(=O)O)CC2=C(C(=C(N2)C=C3C(=C(C(=O)N3)C)C=C)C)CCC(=O)O)C=C4C(= C(C(=O)N4)C=C)C
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

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1. Scigliano, G., et al. 1997. Ital. J. Neurol. Sci. 18: 69-72. PMID: 9239525
2. Ossola, J.O., et al. 1998. Int. J. Biochem. Cell Biol. 30: 285-292. PMID: 9608682
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