Ensifentrine impurity 34 CAS CATO-C4X-335334
| CAS No. | CATO-C4X-335334 |
| Molecular Formula | C26H31N5O4 |
| Molecular Weight | 477.56 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ensifentrine impurity 34.
Ensifentrine impurity 34 (CAS CATO-C4X-335334) is a certified pharmaceutical impurity reference standard with the molecular formula C26H31N5O4 and a molecular weight of 477.56 g/mol.
Ensifentrine impurity 34 (C26H31N5O4) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 34 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 | C26H31N5O4 |
| Molecular Weight | 477.56 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 | 5 |
Related Ensifentrine Standards
- Ensifentrine (CAS 1884461-72-6)
- Ensifentrine impurity 32 (CAS CATO-C4X-335332)
- Ensifentrine impurity 38 (CAS CATO-C4X-335338)
- Ensifentrine impurity 11 (CAS CATO-C4X-335311)
- Ensifentrine impurity 35 (CAS CATO-C4X-335335)
- Ensifentrine impurity 31 (CAS CATO-C4X-335331)
- Ensifentrine Impurity 3 (CAS 3067475-18-4)
- Ensifentrine Impurity 4 (CAS 3067475-19-5)
Recommended Standards
- Nintedanib impurity 182 (CAS CATO-C4X-1814182)
- H-Phe-Arg-Arg-OH (CAS 150398-22-4)
- Palbociclib Impurity 154 (CAS CATO-C4X-1125154)
- Fmoc-D-HoCys(Mob)-OH (CAS 2044710-05-4)
- Atracurium Impurity N8 (CAS 4747-98-2)
- Cetirizine Impurity 32 (CAS CATO-C4X-158232)
- Elagolix Impurity 109 (CAS CATO-C4X-2068109)
- 3-Methoxybenzeneboronic acid-d3 (CAS 2241867-05-8)
- 5-Bromo-6-(methylamino)nicotinaldehyde (CAS 1289104-65-9)
- (4-(tert-Butoxycarbonyl)-2-chloro-4H-thieno[3,2-b]pyrrol-5-yl)boronic acid (CAS 1430411-10-1)
- 4-Bromo-1-ethyl-5-(trifluoromethyl)-1h-pyrazole (CAS 1249968-22-6)
- (R)-2-amino-2-cyclohexylethan-1-ol hydrochloride (CAS 85711-14-4)
- methyl 4-methanesulfinylbutanoate (CAS 1249193-09-6)
- Semaglutide impurity 51 (CAS CATO-C4X-222651)
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