Telmisartan Impurity 9 CAS 884330-14-7
| CAS No. | 884330-14-7 |
| Molecular Formula | C46H38N4O4 |
| Molecular Weight | 710.82 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Telmisartan Impurity 9 (CAS 884330-14-7, C46H38N4O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Telmisartan Impurity 9 (C46H38N4O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 30.0, corresponding to approximately 30 ring(s) or double-bond equivalent(s). With a molecular weight of 710.82 g/mol, it falls into the high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C46H38N4O4 |
| Molecular Weight | 710.82 g/mol |
| 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) | 30.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
Related Telmisartan Standards
- Telmisartan Impurity 18 (CAS 2031272-32-7)
- Telmisartan Acyl-beta-D-glucuronide (CAS 250780-40-6)
- Telmisartan Impurity 100 (CAS CATO-C4X-1359100)
- Telmisartan Impurity 15 (CAS 1026438-56-1)
- Telmisartan Impurity 35 (CAS 2342587-28-2)
- Telmisartan EP Impurity C (CAS 144702-26-1)
- Telmisartan EP Impurity J (CAS 885045-90-9)
- Telmisartan Impurity 95 (CAS CATO-C4X-135995)
Recommended Standards
- Candesartan Cilexetil Impurity 17 (CAS 856414-35-2)
- Daclatasvir Impurity 19 (CAS CATO-C4X-184819)
- Coproporphyrin III Tetramethyl Ester (CAS 5522-63-4)
- Bumetanide Dimer 1 (CAS CATO-C4X-198613)
- Prasugrel EP Impurity B (CAS 1391194-39-0)
- Rosuvastatin Impurity 157 (CAS CATO-C4X-1169157)
- Sacubitril Impurity 24 (CAS 2459446-52-5)
- tert-Butyl ((4-formyl-6-(trifluoromethyl)pyridin-2-yl)methyl)carbamate (CAS 1393543-79-7)
- 2-(2-Aminophenyl)thiazole-4-carboxylic acid (CAS 115311-40-5)
- 3,5,5-Trimethyl-2-pyrrolidinone (CAS 14482-00-9)
- (D-Tyr1,N-Me-Phe3)-Neuropeptide FF (H-4752.0001) (CAS 145274-93-7)
- Ethyl 1-(2-chloroacetamido)cyclopropane-1-carboxylate (CAS 1279815-30-3)
- N-(3,4-Dimethoxyphenyl)-4-fluorobenzylamine (CAS 1019542-69-8)
- Acetyl decapeptide-3 (CAS 935288-50-9)
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