Epinastine Impurity 53 CAS 114-39-6
| CAS No. | 114-39-6 |
| Molecular Formula | C7H9N3O |
| Molecular Weight | 151.17 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Epinastine Impurity 53 (C7H9N3O) is characterized by an amide group, a hydroxyl group, an ether linkage, an aromatic ring system. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Epinastine Impurity 53 (CAS 114-39-6), a pharmacopoeial impurity reference standard (molecular formula C7H9N3O, MW 151.17 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H9N3O |
| Molecular Weight | 151.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | ＞95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 3 |
Related Epinastine Standards
- Epinastine Impurity 54 (CAS 25543-28-6)
- Epinastine Impurity 28 (CAS 532-55-8)
- Epinastine Impurity 37 (CAS 2044-27-1)
- Epinastine impurity 61 (CAS CATO-C4X-184061)
- Epinastine impurity 62 (CAS CATO-C4X-184062)
- Epinastine Impurity 6 (CAS 1211-06-9)
- Epinastine Impurity 15 (CAS CATO-C4X-184015)
- Epinastine Impurity 22 (CAS 124847-00-3)
Recommended Standards
- Telmisartan Impurity 85 (CAS CATO-C4X-135985)
- Methylene Blue Impurity 14 (CAS CATO-C4X-189614)
- N-(5-Aminopyridin-2-yl)acetamide (CAS 29958-14-3)
- N-methyl-N-(pyridin-4-ylmethyl)nitrous amide (CAS 6335-95-1)
- Atrasentan Impurity 75 (CAS 1058551-12-4)
- Minocycline EP Impurity C (CAS 4708-96-7)
- Diazoxide impurity 8 (CAS CATO-C4X-19528)
- 3-(3,3-difluorocyclobutyl)-3-oxopropanenitrile (CAS 1234616-26-2)
- 1-(3,5-Dimethoxyphenyl)urea (CAS 154374-69-3)
- 2,5-dibromothiazolo[5,4-d]thiazole (CAS 1040390-19-9)
- 3-Iodo-4,5-dimethoxybenzaldehyde (CAS 32024-15-0)
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- 3-(Cyclohexylmethoxy)propane-1-sulfonyl chloride (CAS 1408651-62-6)
- Neuropeptide VF (124-131) (human) (CAS 311309-27-0)
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