Ciprofloxacin impurity 45 CAS 93106-58-2
| CAS No. | 93106-58-2 |
| Molecular Formula | C17H18ClN3O3 |
| Molecular Weight | 347.80 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C17H18ClN3O3, Ciprofloxacin impurity 45 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 347.80 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Ciprofloxacin impurity 45 (CAS 93106-58-2) is a certified pharmaceutical impurity reference standard with the molecular formula C17H18ClN3O3 and a molecular weight of 347.80 g/mol.
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.
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 | C17H18ClN3O3 |
| Molecular Weight | 347.80 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Ciprofloxacin Standards
- Ciprofloxacin EP Impurity D (CAS 133210-96-5)
- Ciprofloxacin Impurity 41 (CAS CATO-C4X-136241)
- Ciprofloxacin impurity 51 (CAS CATO-C4X-136251)
- Ciprofloxacin Impurity 15 (CAS 86483-53-6)
- Ciprofloxacin Impurity 26 (CAS 107884-23-1)
- Ciprofloxacin Impurity 14 (CAS 103237-52-1)
- Ciprofloxacin Impurity 28 (CAS CATO-C4X-136228)
- Ciprofloxacin-d8 (CAS 1130050-35-9)
Recommended Standards
- 2-Chloro-4-fluoro-N-((4-phenyltetrahydro-2H-pyran-4-yl)methyl)benzamide (CAS 1091041-24-5)
- N-(2-Chlorobenzyl)phenazine-1-carboxamide (CAS 923113-79-5)
- 2-Chloro-N-((4-(4-fluorophenyl)tetrahydro-2H-pyran-4-yl)methyl)benzamide (CAS 1091172-12-1)
- N-(2-(1H-Benzo[d]imidazol-2-yl)phenyl)-4-chlorobenzamide (CAS 313480-92-1)
- Naratriptan Impurity 3 (CAS CATO-C4X-31883)
- Revefenacin impurity 96 (CAS 145757-95-5)
- Amisulpride impurity 50 (CAS CATO-C4X-104550)
- 3-(4-(2,4-Bis(trifluoromethyl)phenyl)pyridin-2-yl)-1,2,4-oxadiazol-5(4H)-one (CAS 1219453-96-9)
- (3-(N-Butylsulfamoyl)phenyl)boronic acid (CAS 871329-78-1)
- 6-Fluoro-N2,N2-dimethylpyrimidine-2,4-diamine (CAS 165258-71-9)
- 3-(3-Ethoxyphenyl)-4-((2-hydroxy-3-methoxybenzylidene)amino)-1H-1,2,4-triazole-5(4H)-thione (CAS 613249-49-3)
- 3-Methyl-4-nitrobenzamide (CAS 99584-85-7)
- Norphensuximide-D5 (CAS 3464-18-4)
- Liraglutide(10-22)TFA Salt (CAS CATO-C4X-199211)
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