Fexofenadine EP Impurity C CAS 185066-37-9
| CAS No. | 185066-37-9 |
| Molecular Formula | C31H39NO2 |
| Molecular Weight | 457.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 457.65 g/mol gives Fexofenadine EP Impurity C distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Fexofenadine EP Impurity C (CAS 185066-37-9, C31H39NO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Fexofenadine EP Impurity C (C31H39NO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 457.65 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Fexofenadine EP Impurity C 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 | C31H39NO2 |
| Molecular Weight | 457.65 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2009 |
| Nitrogen Atoms | 1 |
Related Fexofenadine Standards
- Fexofenadine Impurity 15 (CAS CATO-C4X-179415)
- Fexofenadine Impurity 16 (CAS CATO-C4X-179416)
- Fexofenadine Impurity 23 (CAS 1208313-13-6)
- Fexofenadine Impurity 41 (CAS 1795786-25-2)
- Fexofenadine Impurity 17 (CAS CATO-C4X-179417)
- Fexofenadine EP Impurity G (CAS 1187954-57-9)
- Fexofenadine Impurity 11 (CAS 1347311-10-7)
- Fexofenadine Impurity 42 (CAS 214601-54-4)
Recommended Standards
- N-(2-(1-Hydroxyheptadecyl)-4-oxoquinazolin-3(4H)-yl)acetamide (CAS 917764-70-6)
- Selumetinib (CAS 606143-52-6)
- (6Z)-N-[(4-Hydroxy-3-methoxyphenyl)methyl]-8-methyl-N-[(6Z)-8-methylnon-6-enoyl]non-6-enamide (CAS 1420776-64-2)
- Lotilaner Impurity 12 (CAS CATO-C4X-325612)
- Ashaconazole lmpurity 92 (CAS CATO-C4X-123692)
- All-rac-alfa-Tocopherol EP Impurity B (Mixture of Diastereomers) (CAS CATO-C4X-119515)
- Baricitinib Impurity 138 HCl (CAS CATO-C4X-2260138)
- 7-chloro-3-cycloheptyl-3H-[1,2,3]triazolo[4,5-d]pyrimidine (CAS 65019-04-7)
- 2-((2,4-Dinitrophenyl)thio)benzo[d]thiazole (CAS 17586-89-9)
- 2-(2-Aminobutan-2-yl)-6-isopropylpyrimidin-4(3H)-one hydrochloride (CAS 1333513-02-2)
- 4-Oxo-4H-quinolizin-9-yl trifluoromethanesulfonate (CAS 951624-00-3)
- 3-Methoxy-4-(1H-pyrazol-1-yl)benzaldehyde (CAS 433920-87-7)
- 3-(2’-Chlorophenyl)-7-ethoxycoumarin (CAS 263365-26-0)
- Liraglutide-d8 Tetratrifluoroacetate (CAS 204656-20-2 (non-labelled, free base))
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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