Epinastine Impurity 17 CAS 23207-75-2
| CAS No. | 23207-75-2 |
| Molecular Formula | C15H12ClNO2 |
| Molecular Weight | 273.71 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 17.
CATO supplies Epinastine Impurity 17 (CAS 23207-75-2), a pharmacopoeial impurity reference standard (molecular formula C15H12ClNO2, MW 273.71 g/mol) used for the identification and quantification of trace impurities in APIs.
Epinastine Impurity 17 (C15H12ClNO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
As a certified reference material (CRM), Epinastine Impurity 17 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 | C15H12ClNO2 |
| Molecular Weight | 273.71 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Epinastine Standards
- Epinastine Impurity 20 (CAS CATO-C4X-184020)
- Epinastine Impurity 46 (CAS CATO-C4X-184046)
- Epinastine Impurity 9 (CAS 141342-71-4)
- Epinastine Impurity 11 (CAS 2702358-41-4)
- Epinastine Impurity 41 (CAS CATO-C4X-184041)
- Epinastine Impurity 27 (CAS CATO-C4X-184027)
- Epinastine Impurity 45 (CAS CATO-C4X-184045)
- Epinastine Impurity 25 (CAS CATO-C4X-184025)
Recommended Standards
- Pranoprofen Impurity 22 (CAS 146330-68-9)
- Oxazepam impurity 12 (CAS 13788-59-5)
- N-[4-(2-Chloroacetyl)phenyl]benzamide (CAS 853574-47-7)
- Carprofen (CAS 53716-49-7)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
- Lumateperone Impurity 21 (CAS CATO-C4X-220121)
- Atorvastatin Impurity 110 (CAS 887470-43-1)
- N-(2-fluorobenzyl)tetrahydrofuran-3-amine (CAS 1342192-88-4)
- Methyl 5-(5-fluoropyridin-2-yl)-1,3,4-oxadiazole-2-carboxylate (CAS 1310807-73-8)
- Methyl 5-Amino-1,2,4-thiadiazole-3-carboxylate (CAS 75028-16-9)
- 3-(3-Bromophenyl)-5-methyl-1,2-oxazole-4-carboxylic acid (CAS 954230-35-4)
- 4-Bromoquinoline-6,7-diol (CAS 1802168-61-1)
- Nicorandil impurity 68 (CAS CATO-C4X-190768)
- Semaglutide Impurity 124 (CAS CATO-C4X-2226124)
Why CATO?
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