Ensifentrine impurity 11 CAS CATO-C4X-335311
| CAS No. | CATO-C4X-335311 |
| Molecular Formula | C26H30N4O5 |
| Molecular Weight | 478.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Ensifentrine impurity 11 (CAS CATO-C4X-335311) is a certified pharmaceutical impurity reference standard with the molecular formula C26H30N4O5 and a molecular weight of 478.54 g/mol.
The molecular framework of Ensifentrine impurity 11 (C26H30N4O5) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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 manufactures Ensifentrine impurity 11 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 | C26H30N4O5 |
| Molecular Weight | 478.54 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Ensifentrine Standards
- Ensifentrine (CAS 1884461-72-6)
- Ensifentrine impurity 32 (CAS CATO-C4X-335332)
- Ensifentrine impurity 34 (CAS CATO-C4X-335334)
- Ensifentrine impurity 38 (CAS CATO-C4X-335338)
- Ensifentrine impurity 31 (CAS CATO-C4X-335331)
- Ensifentrine impurity 35 (CAS CATO-C4X-335335)
- Ensifentrine Impurity 3 (CAS 3067475-18-4)
- Ensifentrine Impurity 4 (CAS 3067475-19-5)
Recommended Standards
- Prusogliptin Impurity 10 (CAS CATO-C4X-328410)
- Temephos-d12 (CAS 1219795-39-7)
- Lotilaner Impurity 5 (CAS 1613733-72-4)
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- Oseltamivir Impurity 71 (CAS CATO-C4X-172071)
- FCN437 Impurity 1 (CAS 1665-65-2)
- Tafluprost Impurity 2 (CAS CATO-C4X-21632)
- 2-(1-Mercaptoethyl)-4-methoxyphenol (CAS 1039963-85-3)
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- 2-((Azetidin-3-yloxy)methyl)-5-methyl-1,3,4-oxadiazole (CAS 1009409-61-3)
- 3-Methoxy-N-(4-(2-oxopyrrolidin-1-yl)phenyl)benzamide (CAS 941888-97-7)
- 2-Amino-5-(1,3-dioxolan-2-yl)pentanoic acid (CAS 170242-34-9)
- 5,10,15,20-Tetrakis(3,5-dimethoxyphenyl)porphyrin (CAS 74684-34-7)
- D-Ala35-Tirzepatide (CAS CATO-CPTD788904)
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