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Carvedilol Impurity B

Also known as: Carvedilol Bis-carbazole, Carvedilol Related Compound B, Carvedilol USP Related Compound B, Carvedilol EP Impurity B, 3,3'-[2-(2-Methoxyphenoxy)ethylazanediyl]bis[1-(9H-carbazol-4-yloxy)propan-2-ol], 1-(9H-carbazol-4-yloxy)-3-[[3-(9H-carbazol-4-yloxy)-2-hydroxypropyl]-[2-(2-methoxyphenoxy)ethyl]amino]propan-2-ol, UNII-56RX0K2UL0

Carvedilol Impurity B (CAS 918903-20-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C39H39N3O6 and a molecular weight of 645.74300 g/mol. Key properties include a boiling point of 905.6ºC at 760 mmHg, a density of 1.328g/cm3 and a flash point of 501.5ºC. GHS hazard statements: H411 — Toxic to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
918903-20-5
Jingsj CID
J-1046415-0
Molecular Formula
C39H39N3O6
Molecular Weight
645.74300 g/mol
Category
Organic Compounds
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point905.6ºC at 760 mmHg
Density1.328g/cm3
Flash Point501.5ºC
Exact Mass645.28400
PSA112.20000
LogP6.52480
Refractive Index1.717

GHS Safety & Compliance

Environmental Hazard
  • H411 — Toxic to aquatic life with long lasting effects

Frequently Asked Questions

What is the CAS number of Carvedilol Impurity B?

The CAS number of Carvedilol Impurity B is 918903-20-5.

What are the molecular formula and molecular weight of Carvedilol Impurity B?

Carvedilol Impurity B has molecular formula C39H39N3O6 and molecular weight 645.74300 g/mol.

Is Carvedilol Impurity B hazardous?

Carvedilol Impurity B has GHS hazard statements H411 — Toxic to aquatic life with long lasting effects.

What are the upstream and downstream products of Carvedilol Impurity B?

For Carvedilol Impurity B, Upstream Products: 2-(2-Methoxyphenoxy)ethanamine, 4-(2,3-Epoxypropoxy)carbazole, Salicylic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Carvedilol Impurity B (CAS 918903-20-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1046415-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.