Tolvaptan Impurity 29 CAS 331947-69-4
| CAS No. | 331947-69-4 |
| Molecular Formula | C16H14ClNO2 |
| Molecular Weight | 287.74 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 287.74 g/mol gives Tolvaptan Impurity 29 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Tolvaptan Impurity 29 (CAS 331947-69-4, C16H14ClNO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Tolvaptan Impurity 29 (C16H14ClNO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 287.74 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C16H14ClNO2 |
| Molecular Weight | 287.74 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Tolvaptan Standards
- Tolvaptan Impurity 54 (CAS 1118884-66-4)
- Tolvaptan Impurity 60 (CAS CATO-C4X-195560)
- Tolvaptan Impurity 55 (CAS 1401998-56-8)
- Tolvaptan Impurity 3 (CAS CATO-C4X-19553)
- Tolvaptan Impurity 28 (CAS 317374-08-6)
- Tolvaptan Impurity 53 (CAS CATO-C4X-195553)
- Tolvaptan Impurity 63 (CAS CATO-C4X-195563)
- Tolvaptan Impurity 81 (CAS 1118884-67-5)
Recommended Standards
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- Eldecalcitol Impurity 9 (CAS 200636-42-6)
- Pirfenidone Impurity 44 (CAS 21901-18-8)
- Progesterone Impurity N2 (CAS 40736-33-2)
- Venlafaxine Impurity 81 HCl (CAS 2223072-89-5)
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- 3-Bromo-4-hydroxy-8-methoxyquinoline (CAS 1204811-42-6)
- 5-Chloro-[1,2,4]triazolo[1,5-a]pyridine (CAS 1427399-34-5)
- Linagliptin Impurity 29 (CAS 1911621-52-7)
- 4-Methyl-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid (CAS 343929-13-5)
- T-Peptide (CAS 2022956-62-1)
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