Levocabastine impurity 23 CAS CATO-C4X-228923
| CAS No. | CATO-C4X-228923 |
| Molecular Formula | C20H23NO2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Levocabastine impurity 23 is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Levocabastine impurity 23 (CAS CATO-C4X-228923) is a certified pharmaceutical impurity reference standard with the molecular formula C20H23NO2HCl and a molecular weight of 345.87 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Levocabastine impurity 23 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 345.87 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), Levocabastine impurity 23 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 | C20H23NO2 HCl |
| Molecular Weight | 345.87 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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
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- Risperidone EP Impurity F (CAS 1346603-86-8)
- Bumetanide Impurity 8 (CAS 25317-76-4)
- 2-Methylcitric Acid (CAS 6061-96-7)
- 5-Iodo-2-methoxy-4,6-dimethylnicotinonitrile (CAS 858120-02-2)
- 6-Methoxy-2,3-dimethylquinoline-4-carbothioamide (CAS 62078-03-9)
- 4,7-Dimethylisoquinoline (CAS 102878-56-8)
- 2-(4-(Difluoromethoxy)-2,3-difluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1628442-57-8)
- 2-(Aminomethyl)-6-cyclopropoxybenzamide (CAS 1243411-21-3)
- Liraglutide Impurity 15 TFA Salt (CAS CATO-C4X-199215)
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