Rifaximin EP Impurity F CAS 14487-05-9
| CAS No. | 14487-05-9 |
| Molecular Formula | C39H47NO14 |
| Molecular Weight | 753.79 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Rifaximin EP Impurity F under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Rifaximin EP Impurity F (CAS 14487-05-9) is a certified pharmaceutical impurity reference standard with the molecular formula C39H47NO14 and a molecular weight of 753.79 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Rifaximin EP Impurity F is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 753.79 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C39H47NO14 |
| Molecular Weight | 753.79 g/mol |
| Purity | >90% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |
Related Rifaximin Standards
- Rifaximin EP Impurity B (CAS 13929-35-6)
- Rifaximin impurity 11 (CAS 80621-88-1)
- Rifaximin Impurity B (CAS 1351775-03-5)
- Rifaximin EP Impurity G (CAS 80621-76-7)
- Rifaximin (CAS 80621-81-4)
- Rifaximin Impurity 12 (CAS CATO-C4X-150512)
- Rifaximin-d6(Major) (CAS 1262992-43-7)
- Rifaximin EP Impurity D (CAS CATO-C4X-15054)
Recommended Standards
- Flomoxef Impurity 66 (CAS CATO-C4X-138266)
- Semaglutide impurity 37 (CAS CATO-C4X-222637)
- Flomoxef Impurity 55 (CAS CATO-C4X-138255)
- H-Phe-Phe-Phe-Phe-Phe-OH (CAS 65757-10-0)
- Furosemide Impurity 57 (CAS 19377-82-3)
- Dabigatran Impurity 60 (CAS CATO-C4X-108960)
- Nimesulide EP Impurity E (CAS 905858-63-1)
- 6,8-Dichloro-3-methyl-2-(methylsulfinyl)quinazolin-4(3H)-one (CAS 1171486-58-0)
- [(2-bromo-4-fluorophenyl)methyl](methyl)amine hydrochloride (CAS 1645350-32-8)
- 5,6-Dihydro-4H-cyclopenta[d]thiazole-2-carboxylic acid (CAS 1044756-79-7)
- empedoic Acid Impurity 5 (CAS 2280838-78-8)
- 2-(((1-Propyl-1H-pyrazol-4-yl)amino)methyl)benzoic acid hydrochloride (CAS 1856056-80-8)
- 2H-Pyran, tetrahydro-3-(phenylmethyl)- (CAS 60466-73-1)
- Semaglutide impurity 23 (CAS CATO-C4X-222623)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com