Indacaterol Impurity 71 CAS CATO-C4X-150071
| CAS No. | CATO-C4X-150071 |
| Molecular Formula | C18H13Br2NO3 |
| Molecular Weight | 451.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Indacaterol Impurity 71 (CAS CATO-C4X-150071) is a certified pharmaceutical impurity reference standard with the molecular formula C18H13Br2NO3 and a molecular weight of 451.11 g/mol.
Based on its molecular formula C18H13Br2NO3, Indacaterol Impurity 71 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 451.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C18H13Br2NO3 |
| Molecular Weight | 451.11 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Indacaterol Standards
- Indacaterol Impurity 42 (CAS CATO-C4X-150042)
- Indacaterol Impurity 19 (CAS 1454818-75-7)
- Indacaterol Impurity 51 (CAS CATO-C4X-150051)
- Indacaterol Impurity 63 (CAS CATO-C4X-150063)
- Indacaterol Impurity 11 (CAS CATO-C4X-150011)
- Indacaterol Impurity 20 (CAS 2250243-41-3)
- Indacaterol Impurity 41 (CAS 312759-81-2)
- Indacaterol Impurity 49 (CAS CATO-C4X-150049)
Recommended Standards
- 4-[(2,4-Dichlorobenzyl)oxy]-3-ethoxy-5-iodobenzaldehyde (CAS 345980-29-2)
- 3-(4-Bromo-2-fluorophenyl)-1-[(1Z)-{[(2,4-dichlorophenyl)methoxy]imino}methyl]thiourea (CAS 477852-64-5)
- 1-(2-(((2-Chlorophenyl)(phenyl)methyl)thio)ethyl)-4-(2-methylbenzyl)piperazine (CAS 17692-23-8)
- Tribenzylstannyl Acetate (CAS 10113-31-2)
- Olopatadine Impurity 47 (CAS 872040-99-8)
- N-Nitroso Tropicamide EP Impurity A (CAS 13256-23-0)
- Remdesivir Impurity 42 (CAS 1191237-66-7)
- Sacubitril impurity 19 (CAS CATO-C4X-280919)
- 1-[3-Chloroprop-2-Enyl]-N-[4-Chloro-2-(Trifluoromethyl)Phenyl]Pyrrolidin-2-Imine (CAS 32280-73-2)
- 1-(2-(6-Methoxy-4-methylpyridin-3-yl)piperidin-1-yl)ethanone (CAS 1352495-81-8)
- 5-Amino-4-hydroxy-nicotinic acid (CAS 1378815-02-1)
- Methyl 4-(1-aminoethyl)-1H-pyrrole-2-carboxylate (CAS 1260770-01-1)
- 2-Methyl-5,6-dihydrobenzo[h]quinazoline (CAS 67602-28-2)
- CBP501 Affinity Peptide trifluoroacetate salt (CAS 1351804-17-5)
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