Rifaximin EP Impurity C Sodium salt CAS 14897-39-3
| CAS No. | 14897-39-3 |
| Molecular Formula | C37H46NO12 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Rifaximin EP Impurity C Sodium salt is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Rifaximin EP Impurity C Sodium salt (CAS 14897-39-3) is a certified pharmaceutical impurity reference standard with the molecular formula C37H46NO12Na and a molecular weight of 719.76 g/mol.
Rifaximin EP Impurity C Sodium salt (C37H46NO12Na) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Rifaximin EP Impurity C Sodium salt meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C37H46NO12 Na |
| Molecular Weight | 719.76 g/mol |
| Purity | 97%+ |
| 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) | 15.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |
Related Rifaximin Standards
- Rifaximin EP Impurity H (CAS 1210022-90-4)
- Rifaximin-d6(Major) (CAS 1262992-43-7)
- Rifaximin Impurity B (CAS 1351775-03-5)
- Rifaximin Methylenequinoid formDISCONTINUED (CAS 1351775-04-6)
- Rifaximin EP Impurity B (CAS 13929-35-6)
- Rifaximin EP Impurity F (CAS 14487-05-9)
- Rifaximin-N-Oxide (CAS 51963-55-4)
- Rifaximin EP Impurity A (CAS 695-34-1)
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- Tiotropium Bromide Impurity 24 (CAS 1978292-75-9)
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- 3,5-Dichloro-4-(2-methoxyethoxy)benzenesulfonamide (CAS 1184224-20-1)
- Methyl 6-hydroxy-4-methylpicolinate (CAS 846046-89-7)
- Peptide 6A (H-6905.0005) (CAS 73549-32-3)
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