Formoterol Impurity 19 CAS 126002-14-0
| CAS No. | 126002-14-0 |
| Molecular Formula | C11H15NO2 |
| Molecular Weight | 193.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Formoterol Impurity 19 (CAS 126002-14-0) is a certified pharmaceutical impurity reference standard with the molecular formula C11H15NO2 and a molecular weight of 193.24 g/mol.
Formoterol Impurity 19 (C11H15NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), Formoterol Impurity 19 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C11H15NO2 |
| Molecular Weight | 193.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 1 |
Related Formoterol Standards
- Formoterol impurity 106 (CAS CATO-C4X-1525106)
- Formoterol Impurity 49 (CAS 14367-46-5)
- Formoterol Impurity 31 (CAS 477552-94-6)
- Formoterol Impurity 47 (CAS 70284-07-0)
- Formoterol Impurity 46 (CAS 22331-70-0)
- Formoterol Impurity 48 (CAS 87179-33-7)
- Formoterol Impurity 44 (CAS 58993-79-6)
- Formoterol EP Impurity G (CAS 23239-32-9)
Recommended Standards
- Norepinephrine Impurity 31 (CAS CATO-C4X-1514131)
- Methadone EP Impurity E (CAS 86-29-3)
- Doxofylline Impurity 42 (CAS 56548-04-0)
- Indobufen Impurity 86 (CAS 6555-36-8)
- Tryptophan Impurity 45 (CAS 2306500-72-9)
- N-Nitroso Oxcarbazepine EP Impurity C (CAS CATO-C4X-116431)
- Buspirone EP Impurity M (CAS 80827-62-9)
- 3-(4-Piperidyl)indole (CAS 17403-09-7)
- Neostigmine impurity 35 (CAS CATO-C4X-204235)
- 5-(3,4-Dimethoxyphenyl)-4-((tetrahydrofuran-2-yl)methyl)-4H-1,2,4-triazole-3-thiol (CAS 917746-92-0)
- 6-(Chloromethyl)imidazo[2,1-b]thiazole hydrochloride (CAS 139029-61-1)
- (3-Methoxynaphthalen-2-yl)(methyl)sulfane (CAS 1310197-64-8)
- Cyclohexyl(phenyl)methanamine hydrochloride (CAS 58271-62-8)
- Semaglutide impurity 55 (CAS CATO-C4X-222655)
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