Bilirubin
Also known as: Bilirubin IXa, Bilirubin IX alpha, Cholerythrin, Hematoidin, Principal bile pigment, 2,17-Diethenyl-1,10,19,22,23,24-hexahydro-3,7,13,18-tetramethyl-1,19-dioxo-21H-biline-8,12-dipropanoic acid
Bilirubin (CAS 635-65-4) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C33H36N4O6 and a molecular weight of 584.662 g/mol. Key properties include a melting point of 192 °C, a boiling point of 641.7°C, a density of 1.2163 and a flash point of 478.1±37.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 635-65-4
- Jingsj CID
- J-20676-8
- Molecular Formula
- C33H36N4O6
- Molecular Weight
- 584.662 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 192 °C |
|---|---|
| Boiling Point | 641.7°C |
| Density | 1.2163 |
| Flash Point | 478.1±37.1 °C |
| Exact Mass | 584.263489 |
| PSA | 164.38000 |
| LogP | 3.15 |
| Vapor Pressure | 0.0±0.3 mmHg at 25°C |
| Refractive Index | 1.640 |
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|---|
| Additional Information | [1]. Lu RN, et al. Unconjugated Bilirubin inhibits proteolytic cleavage of von Willebrand factor by ADAMTS13 protease. J Thromb Haemost. 2015 Jun;13(6):1064-72. [2]. Mölzer C, et al. Bilirubin and related tetrapyrroles inhibit food-borne mutagenesis: a mechanism for antigenotoxic action against a model epoxide. J Nat Prod. 2013 Oct 25;76(10):1958-65. |
Customs & Trade Information
| HS Code | 29339990 |
|---|
Frequently Asked Questions
What is the CAS number of Bilirubin?
The CAS number of Bilirubin is 635-65-4.
What are the molecular formula and molecular weight of Bilirubin?
Bilirubin has molecular formula C33H36N4O6 and molecular weight 584.662 g/mol.
What are the upstream and downstream products of Bilirubin?
For Bilirubin, Upstream Products: Biliverdin; Downstream Products: 3-(2,4-Dimethyl-1H-pyrrol-3-yl)propanoic acid, 2,4-Dimethyl-3-ethyl-1H-pyrrole, 2-ethyl-3-methylmaleimide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Bilirubin (CAS 635-65-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-20676-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.