Sitafloxacin Impurity 23 CAS 147782-16-9
| CAS No. | 147782-16-9 |
| Molecular Formula | C24H26ClF2N3O5 |
| Molecular Weight | 509.93 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Sitafloxacin Impurity 23 (CAS 147782-16-9, C24H26ClF2N3O5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C24H26ClF2N3O5, Sitafloxacin Impurity 23 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 509.93 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 certified reference material (CRM), Sitafloxacin 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 | C24H26ClF2N3O5 |
| Molecular Weight | 509.93 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
Related Sitafloxacin Standards
- Sitafloxacin impurity 88 (CAS CATO-C4X-115588)
- Sitafloxacin impurity 73 (CAS CATO-C4X-115573)
- Sitafloxacin impurity 71 (CAS CATO-C4X-115571)
- Sitafloxacin impurity 76 (CAS CATO-C4X-115576)
- Sitafloxacin Impurity 22 (CAS CATO-C4X-115522)
- Sitafloxacin impurity 78 (CAS CATO-C4X-115578)
- Sitafloxacin Impurity 38 (CAS CATO-C4X-115538)
- Sitafloxacin impurity 81 (CAS CATO-C4X-115581)
Recommended Standards
- ((Benzene-1,3,5-triyltris(ethyne-2,1-diyl))tris(benzene-4,1-diyl))triboronic acid (CAS 1019209-39-2)
- PF-4942847 (CAS 1207961-33-8)
- 1-(2-(2-Chloro-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(4-methoxybenzylidene)-3-methyl-1H-pyrazol-5(4H)-one (CAS 119457-14-6)
- 1-(Benzylidenehydrazono)-7-chloro-10-hydroxy-3-(4-(trifluoromethyl)phenyl)-1,2,3,4-tetrahydroacridin-9(10H)-one (CAS 102192-66-5)
- Rabeprazole impurity 46 (CAS CATO-C4X-112146)
- Upadacitinib Impurity 12 (CAS 2095311-51-4)
- Dihydralazine EP Impurity A (CAS 649765-80-0)
- 4,5-Dichloro-2-methoxypyrimidine (CAS 1240601-33-5)
- 1,3-Bis(3-(triethoxysilyl)propyl)urea (CAS 69465-84-5)
- 4-(Piperidin-1-yl)-2-(trifluoromethyl)aniline (CAS 954260-57-2)
- 2-((3-Methoxyphenyl)sulfonyl)-4-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidine (CAS 339019-63-5)
- 1-Methyl-2-(3-pyridin-3-yl-propyl)-pyrrolidine-2-carboxylic acid (CAS 1316220-94-6)
- CAS CATO-C4X-34215 (CAS CATO-C4X-34215)
- [3-31]-Semaglutide D (CAS C152H230N42O47)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com