Formoterol Impurity I CAS 169375-55-7
| CAS No. | 169375-55-7 |
| Molecular Formula | C19H24N2O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 460.48 g/mol gives Formoterol Impurity I distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Formoterol Impurity I (CAS 169375-55-7) is a high-purity analytical reference standard with the molecular formula C19H24N2O4C4H4O4 and a molecular weight of 460.48 g/mol.
Based on its molecular formula C19H24N2O4C4H4O4, Formoterol Impurity I contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 460.48 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 is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), Formoterol Impurity I 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 | C19H24N2O4 C4H4O4 |
| Molecular Weight | 460.48 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2005 |
| Nitrogen Atoms | 2 |
Related Formoterol Standards
- Formoterol Impurity 69 (CAS 100865-09-6)
- Formoterol-d6(Mixture of Diastereomers) (CAS 1020719-45-2)
- Formoterol Impurity 22 HCl (CAS 1049695-95-5)
- Formoterol Impurity 72 (CAS 108971-53-5)
- Formoterol EP Impurity B (CAS 1224588-66-2)
- Formoterol Impurity 19 (CAS 126002-14-0)
- Formoterol Impurity 28 (CAS 126587-86-8)
- Formoterol (Mixture of Diastereomers) (CAS 128954-45-0)
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- 4-((4-Methylthiazol-2-yl)amino)-4-oxobut-2-enoic acid (CAS 42574-75-4)
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- Ethyl 3,5-dibromo-4-nitrobenzoate (CAS 40587-64-2)
- 2-Chloro-n-[2-(1-phenyl-1h-pyrazol-4-yl)ethyl]acetamide (CAS 1269151-14-5)
- (4-Cyclohexyl-4h-1,2,4-triazol-3-yl)methanol (CAS 1521105-52-1)
- (9Z,12Z,15Z)-Octadeca-9,12,15-trien-1-amine (CAS 77889-85-1)
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