Ensifentrine impurity 12 CAS CATO-C4X-335312
| CAS No. | CATO-C4X-335312 |
| Molecular Formula | C17H20N4O5 |
| Molecular Weight | 360.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C17H20N4O5, Ensifentrine impurity 12 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 360.36 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).
CATO supplies Ensifentrine impurity 12 (CAS CATO-C4X-335312), a pharmacopoeial impurity reference standard (molecular formula C17H20N4O5, MW 360.36 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
As a certified reference material (CRM), Ensifentrine impurity 12 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 | C17H20N4O5 |
| Molecular Weight | 360.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Ensifentrine Standards
- Ensifentrine impurity 23 (CAS 43113-25-3)
- Ensifentrine impurity 24 (CAS CATO-C4X-335324)
- Ensifentrine impurity 25 (CAS CATO-C4X-335325)
- Ensifentrine impurity 30 (CAS CATO-C4X-335330)
- Ensifentrine impurity 40 (CAS CATO-C4X-335340)
- Ensifentrine impurity 36 (CAS CATO-C4X-335336)
- Ensifentrine impurity 37 (CAS CATO-C4X-335337)
- Ensifentrine impurity 16 (CAS CATO-C4X-335316)
Recommended Standards
- Tetrabenazine Impurity 46 (CAS CATO-C4X-274846)
- Nitrendipine (CAS 39562-70-4)
- Tetrabenazine Impurity 45 (CAS CATO-C4X-274845)
- L,L-Dityrosine (CAS 63442-81-9)
- Goserelin Impurity 16 (CAS CATO-C4X-192016)
- Trimebutine Impurity 14 (CAS CATO-C4X-185814)
- Imatinib Impurity 39 (CAS 796738-71-1)
- Ethyl 4'-cyano-[1,1'-biphenyl]-3-carboxylate (CAS 131379-34-5)
- 2-[2-nitro-4-(trifluoromethyl)phenoxy]phenyl 4-(chloromethyl)benzoate (CAS 680579-25-3)
- 4-(Azetidin-3-yloxy)pyrimidine (CAS 1343343-31-6)
- (E)-N'-(5-Benzoyl-1,3-thiazol-2-yl)-N,N-dimethylmethanimidamide (CAS 865659-43-4)
- (2S,3R)-Ethyl 2-((tert-butoxycarbonyl)amino)-3-hydroxybutanoate (CAS 84500-44-7)
- Tert-butyl ((4R,5S)-2,2,4-trimethyl-1,3-dioxan-5-yl)carbamate (CAS 1932023-27-2)
- Semaglutide impurity 73 (CAS CATO-C4X-222673)
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