Rifamycin B
利福霉素B
Also known as: 4-O-(Carboxymethyl)rifamycin, Nancimycin, Nacimycin, Rifaximin EP Impurity B, Rifaximin Impurity B (EP), O4-carboxymethyl-rifamycin, Rifamycin, 4-O-(carboxymethyl)-, rifamycin-B, rifomycin-B
Rifamycin B (CAS 13929-35-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C39H49NO14 and a molecular weight of 755.80500 g/mol. It is also known as 4-O-(Carboxymethyl)rifamycin, Nancimycin and Nacimycin. Key properties include a boiling point of 907.1ºC at 760 mmHg, a density of 1.37g/cm3 and a flash point of 502.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 13929-35-6
- Jingsj CID
- J-1131696-7
- Molecular Formula
- C39H49NO14
- Chinese Name
- 利福霉素B
- Molecular Weight
- 755.80500 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 907.1ºC at 760 mmHg |
|---|---|
| Density | 1.37g/cm3 |
| Flash Point | 502.4ºC |
Frequently Asked Questions
What is the CAS number of Rifamycin B?
The CAS number of Rifamycin B is 13929-35-6.
What are the molecular formula and molecular weight of Rifamycin B?
Rifamycin B has molecular formula C39H49NO14 and molecular weight 755.80500 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Rifamycin B (CAS 13929-35-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1131696-7 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.