Rifapentine Impurity 11 CAS CATO-C4X-195911
| CAS No. | CATO-C4X-195911 |
| Molecular Formula | C46H62N4O12 |
| Molecular Weight | 863.00 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Rifapentine Impurity 11 (CAS CATO-C4X-195911), a pharmacopoeial impurity reference standard (molecular formula C46H62N4O12, MW 863.00 g/mol) used for the identification and quantification of trace impurities in APIs.
Rifapentine Impurity 11 (C46H62N4O12) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C46H62N4O12 |
| Molecular Weight | 863.00 g/mol |
| Purity | ≥96% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Rifapentine Standards
- Rifapentine impurity 27 (CAS CATO-C4X-195927)
- Rifapentine impurity 16 (CAS CATO-C4X-195916)
- Rifapentine Quinone (CAS CATO-C4X-19593)
- RIFAPENTINE (CAS 1279038-35-5)
- Rifapentine hydrochloride (CAS 127923-87-9)
- Rifapentine impurity 18 (CAS CATO-C4X-195918)
- Rifapentine impurity 19 (CAS CATO-C4X-195919)
- Rifapentine (CAS 61379-65-5)
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