Ensifentrine Impurity 2 CAS 75535-95-4
| CAS No. | 75535-95-4 |
| Molecular Formula | C14H16N2O5 |
| Molecular Weight | 292.29 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 2.
CATO supplies Ensifentrine Impurity 2 (CAS 75535-95-4), a pharmacopoeial impurity reference standard (molecular formula C14H16N2O5, MW 292.29 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Ensifentrine Impurity 2 (C14H16N2O5) is characterized by a nitrogen-containing heterocyclic scaffold, 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Ensifentrine Impurity 2 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 | C14H16N2O5 |
| Molecular Weight | 292.29 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 2 |
Related Ensifentrine Standards
- Ensifentrine Impurity 26 (CAS CATO-C4X-335326)
- Ensifentrine impurity 16 (CAS CATO-C4X-335316)
- Ensifentrine impurity 50 (CAS 39201-71-3)
- Ensifentrine impurity 44 (CAS CATO-C4X-335344)
- Ensifentrine impurity 46 (CAS CATO-C4X-335346)
- Ensifentrine impurity (CAS 4359-64-2)
- Ensifentrine impurity 48 (CAS 20488-59-9)
- Ensifentrine impurity 45 (CAS 3088358-10-2)
Recommended Standards
- Icotinib Impurity 6 (CAS 1204313-57-4)
- Etrimfos (CAS 38260-54-7)
- Lenalidomide Impurity 64 (CAS CATO-C4X-190364)
- Fensulfothion-Oxon (CAS 6552-21-2)
- Baxdrostat Impurity 29 (CAS 1428652-18-9)
- Cilnidipine Impurity 18 (CAS 52326-05-3)
- Levodopa Impurity 17 (CAS 27313-65-1)
- n-(4-Fluoro-2-methylbenzyl)-1-methoxypropan-2-amine (CAS 1250959-90-0)
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- 5-(Bromomethyl)-3-chloro-6-(difluoromethyl)pyridin-2-amine (CAS 1803671-64-8)
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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