Moxifloxacin Impurity N45 CAS 1042641-60-0
| CAS No. | 1042641-60-0 |
| Molecular Formula | C7H2ClF3O2 |
| Molecular Weight | 210.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Moxifloxacin Impurity N45 (C7H2ClF3O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 210.54 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Moxifloxacin Impurity N45 (CAS 1042641-60-0) is a certified pharmaceutical impurity reference standard with the molecular formula C7H2ClF3O2 and a molecular weight of 210.54 g/mol.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H2ClF3O2 |
| Molecular Weight | 210.54 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | F/Cl-containing |
Related Moxifloxacin Standards
- Moxifloxacin Impurity 66 (CAS 38233-47-5)
- Moxifloxacin Impurity 45 (CAS 112811-65-1)
- Moxifloxacin Impurity 176 (CAS 2102950-42-3)
- Moxifloxacin Impurity 35 (CAS 151213-39-7)
- Moxifloxacin Impurity 86 (CAS 128740-14-7)
- Moxifloxacin impurity 163 (CAS 148887-46-1)
- Moxifloxacin impurity 164 (CAS 1668584-26-6)
- Moxifloxacin impurity 165 (CAS 457948-35-5)
Recommended Standards
- 2,4,5-Trifluoro-3-chlorobenzoic acid (CAS 101513-77-3)
- 4-Chloro-1-(2,2-difluoroethyl)-1h-pyrazole-3-carboxylic acid (CAS 1006486-42-5)
- 3-(Trifluoromethyl)pyrazine-2-carbonyl chloride (CAS 942516-02-1)
- 5-Chloro-3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic acid (CAS 1202993-11-0)
- Terazosin Impurity 23 (CAS 1260939-66-9)
- Isoprenaline Impurity 41 (CAS CATO-C4X-277541)
- Fulvestrant Impurity 16 (CAS CATO-C4X-191716)
- N2,N2-diisopropyl-1,3,4-thiadiazole-2,5-diamine (CAS 72269-92-2)
- 6-Fluoro-3-(1-isopropyl-1,2,3,6-tetrahydropyridin-4-yl)-1H-indole (CAS 1958101-07-9)
- 1-(Chloromethyl)-2-(3-(trifluoromethyl)phenoxy)benzene (CAS 478032-57-4)
- Ethyl 5-((4-chloro-N-(phenoxycarbonyl)phenyl)sulfonamido)-2-methylbenzofuran-3-carboxylate (CAS 397287-73-9)
- 2-{4-[2-(pyridin-4-yl)ethyl]piperazin-1-yl}aniline (CAS 1179164-76-1)
- tert-butyl 4-(5-amino-1-methyl-1H-1,2,4-triazol-3-yl)piperidine-1-carboxylate (CAS 1788722-27-9)
- Semaglutide impurity 331 (CAS CATO-C4X-2226231)
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