(7S)-Sitafloxacin Impurity N11 CAS 127199-45-5
| CAS No. | 127199-45-5 |
| Molecular Formula | C11H20N2O2 |
| Molecular Weight | 212.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C11H20N2O2, (7S)-Sitafloxacin Impurity N11 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 212.29 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a process- or degradation-related impurity, (7S)-Sitafloxacin Impurity N11 (CAS 127199-45-5, C11H20N2O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 | C11H20N2O2 |
| Molecular Weight | 212.29 g/mol |
| Appearance | White to pale yellow crystalline powder |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 2 |
Related S Standards
- (7R)-Sitafloxacin Impurity 13 (CAS 127199-44-4)
- Sitafloxacin impurity 53 (CAS 1933694-45-1)
- Sitafloxacin Impurity 19 (CAS CATO-C4X-115519)
- Sitafloxacin impurity 84 (CAS 1533823-99-2)
- Sitafloxacin Impurity 40 (CAS 144282-35-9)
- Sitafloxacin Impurity 49 (CAS 129306-06-5)
- Sitafloxacin Impurity 27 (CAS 119385-80-7)
- Sitafloxacin Impurity 16 (CAS 98349-24-7)
Recommended Standards
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- 1,2,3,7,8-Pentachloro[13C12]dibenzo-p-dioxin (CAS 109719-79-1)
- Inosine Impurity 2 (CAS 52678-79-2)
- Regadenoson Impurity 24 (CAS 50447-10-4)
- Dasatinib Impurity 48 (CAS CATO-C4X-160748)
- 3-(Trifluoromethyl)pyrrolidine-3-carboxylic Acid (CAS 916423-57-9)
- LY 2140023 (CAS 635318-55-7)
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- Piperidin-2,2,3,4,4,5,5,6,6-d9-3-ol (CAS 1553977-79-9)
- 5-(((2-(Dimethylamino)ethyl)amino)methyl)-1,3-dimethyl-1,3-dihydro-2H-benzo[d]imidazol-2-one (CAS 881452-54-6)
- 6-(tert-Butoxy)-4-cyclopropoxy-N-methylnicotinamide (CAS 1243448-52-3)
- Peptide 437 (CAS CATO-CPTD788437)
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