Formoterol EP Impurity C CAS 1795135-61-3
| CAS No. | 1795135-61-3 |
| Molecular Formula | C20H26N2O4 |
| Molecular Weight | 358.43 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.
CATO supplies Formoterol EP Impurity C (CAS 1795135-61-3), a pharmacopoeial impurity reference standard (molecular formula C20H26N2O4, MW 358.43 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Formoterol EP Impurity C (C20H26N2O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 358.43 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures Formoterol EP Impurity C under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H26N2O4 |
| Molecular Weight | 358.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 2 |
Related Formoterol Standards
- Formoterol EP Impurity D (CAS 1795133-96-8)
- Formoterol EP Impurity E (CAS 1616967-26-0)
- Formoterol Impurity 89 (CAS CATO-C4X-152589)
- Formoterol Impurity 58 (CAS 725719-13-1)
- Formoterol Impurity 60 (CAS CATO-C4X-152560)
- Formoterol impurity 126 (CAS CATO-C4X-1525126)
- Formoterol impurity 127 (CAS 188690-82-6)
- Formoterol Impurity 54 (CAS 193761-53-4)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com