Epinastine Impurity 11 CAS 2702358-41-4
| CAS No. | 2702358-41-4 |
| Molecular Formula | C16H13N3O2 |
| Molecular Weight | 279.29 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 Epinastine Impurity 11.
CATO supplies Epinastine Impurity 11 (CAS 2702358-41-4), a pharmacopoeial impurity reference standard (molecular formula C16H13N3O2, MW 279.29 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Epinastine Impurity 11 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 279.29 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Epinastine 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 | C16H13N3O2 |
| Molecular Weight | 279.29 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Nitrogen Atoms | 3 |
Related Epinastine Standards
- Epinastine Impurity 20 (CAS CATO-C4X-184020)
- Epinastine Impurity 46 (CAS CATO-C4X-184046)
- Epinastine Impurity 25 (CAS CATO-C4X-184025)
- Epinastine Impurity 35 (CAS CATO-C4X-184035)
- Epinastine Impurity 8 (CAS CATO-C4X-18408)
- Epinastine Impurity 17 (CAS 23207-75-2)
- Epinastine Impurity 9 (CAS 141342-71-4)
- Epinastine Impurity 41 (CAS CATO-C4X-184041)
Recommended Standards
- Lacosamide impurity 40 (CAS CATO-C4X-183040)
- Baloxavir Marboxil Impurity 206 (CAS CATO-C4X-2108206)
- Lacosamide impurity 39 (CAS CATO-C4X-183039)
- Baloxavir impurity 80 (CAS 2136287-77-7)
- Naproxen Impurity 17 (CAS CATO-C4X-170817)
- Maxacalcitol Impurity 15 (CAS 215929-37-6)
- Apremilast Impurity 105 (CAS CATO-C4X-1009105)
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- 5-Bromo-[1,1'-biphenyl]-3-amine (CAS 136649-27-9)
- 3-(4-Amino-3-methylphenoxymethyl)benzonitrile hydrochloride (CAS 1251925-23-1)
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- 6-Methoxy-2-oxo-2H-chromene-3-carboxylic acid (CAS 35924-44-8)
- 2-Hydroxy-3,3-diphenylpropanoic acid (CAS 41858-47-3)
- 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