Tenofovir alafenamide Impurity 32 CAS CATO-C4X-179732
| CAS No. | CATO-C4X-179732 |
| Molecular Formula | C21H29N6O5P |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Tenofovir alafenamide Impurity 32 (CAS CATO-C4X-179732) is a certified pharmaceutical impurity reference standard with the molecular formula C21H29N6O5PC4H4O4 and a molecular weight of 592.55 g/mol.
Based on its molecular formula C21H29N6O5PC4H4O4, Tenofovir alafenamide Impurity 32 contains a flavonoid core, an amide group, a phosphate ester group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 592.55 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C21H29N6O5P C4H4O4 |
| Molecular Weight | 592.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
Related Tenofovir Standards
- Tenofovir alafenamide Impurity 79 (CAS 102-10-3)
- rac Tenofovir-d6 (CAS 1020719-94-1)
- Tenofovir disoproxil Impurity 142 (CAS 102537-97-3)
- Tenofovir Disoproxil Dimer (CAS 1093279-76-5)
- Tenofovir disoproxil Impurity 6 (CAS 1093279-77-6)
- Tenofovir disoproxil Impurity 28 (CAS 1115-59-9)
- Tenofovir Impurity 59 (CAS 116384-56-6)
- Tenofovir alafenamide impurity 85 (CAS 121149-98-2)
Recommended Standards
- Dabrafenib Impurity N6 (CAS 1195768-20-7)
- Phenytoin EP Impurity F (CAS 51169-17-6)
- Hydrochlorothiazide Impurity 50 (CAS CATO-C4X-117750)
- 4-Bromo-3-(tert-butyl)isoxazol-5-amine (CAS 166964-06-3)
- Carbocisteine Impurity 63 (CAS CATO-C4X-201063)
- 2-(2-Acetamido-4-(p-tolyl)thiazol-5-yl)acetic acid (CAS 1181367-03-2)
- Cyclopropyl(4-fluoro-3-methylphenyl)methanol (CAS 1181600-68-9)
- N-Methyl-1-(4-methyloxazol-2-yl)methanamine (CAS 1196151-82-2)
- N-Nitroso Nafamostat impurity 121 HCl (CAS CATO-C4X-1332121)
- Tirzepatide Impurity 59 (CAS CATO-C4X-324059)
Why CATO?
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