Levocabastine impurity 20 CAS CATO-C4X-228920
| CAS No. | CATO-C4X-228920 |
| Molecular Formula | C26H30FN2O3 |
| Molecular Weight | N/A |
| 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 Levocabastine impurity 20.
CATO supplies Levocabastine impurity 20 (CAS CATO-C4X-228920), a pharmacopoeial impurity reference standard (molecular formula C26H30FN2O3, MW 437.54 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C26H30FN2O3, Levocabastine impurity 20 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 437.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), Levocabastine impurity 20 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 | C26H30FN2O3 |
| Molecular Weight | 437.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Levocabastine Standards
- Levocabastine EP impurity E (CAS 105452-51-5)
- Levocabastine Impurity 9 (CAS 179064-61-0)
- Levocabastine Impurity 4 (CAS 25115-74-6)
- Levocabastine EP Impurity H (CAS 56326-98-8)
- Levocabastine Impurity 11 (CAS 577036-07-8)
- Levocabastine EP Impurity F (CAS 785021-81-0)
- Levocabastine EP Impurity F (CAS 793621-70-2)
- Levocabastine (CAS 79516-68-0)
Recommended Standards
- N-Nitroso Flupirtine Dimer Impurity 10 (CAS CATO-C4X-104210)
- Ondansetron EP Impurity H (CAS 99614-14-9)
- Sofosbuvir Impurity 103 (CAS CATO-C4X-1052103)
- Ezetimibe Impurity 87 (CAS 2514695-40-8)
- Fluconazole Impurity 49 (CAS CATO-C4X-101949)
- 1-Bromo-2-(tert-butoxy)-4-cyclopropoxybenzene (CAS 1243346-18-0)
- Midazolam Impurity 41 (CAS 59468-85-8)
- (S)-1-amino-3-methyl-4,5-dihydro-1H-benzo[d]azepin-2(3H)-one (2R,3R)-2,3-bis(4-methylbenzoyloxy)succinate (CAS 425386-58-9)
- (r)-2-Amino-2-(3-ethynylphenyl)ethan-1-ol (CAS 1212910-92-3)
- Mast Cell Degranulating Peptide (CAS 83856-13-7)
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