Sitafloxacin Impurity 29 CAS CATO-C4X-115529
| CAS No. | CATO-C4X-115529 |
| Molecular Formula | C20H20ClF2NO2 |
| Molecular Weight | 379.83 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Sitafloxacin Impurity 29 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.
As a process- or degradation-related impurity, Sitafloxacin Impurity 29 (CAS CATO-C4X-115529, C20H20ClF2NO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Sitafloxacin Impurity 29 (C20H20ClF2NO2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 379.83 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.
Physical & Chemical Properties
| Molecular Formula | C20H20ClF2NO2 |
| Molecular Weight | 379.83 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
Related Sitafloxacin Standards
- Sitafloxacin Dechloro Impurity (CAS CATO-C4X-115524)
- Sitafloxacin Impurity 1 (CAS CATO-C4X-11551)
- Sitafloxacin Impurity 69 (CAS CATO-C4X-115569)
- Sitafloxacin Impurity 87 (CAS 500295-84-1)
- Sitafloxacin Impurity 27 (CAS CATO-C4X-115527)
- Sitafloxacin impurity 77 (CAS 2412444-06-3)
- Sitafloxacin impurity 75 (CAS CATO-C4X-115575)
- Sitafloxacin impurity 89 (CAS CATO-C4X-115589)
Recommended Standards
- Empagliflozin Impurity 51 (CAS CATO-C4X-106551)
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- Ethyl 4-(4-chlorophenyl)-1-(2-ethoxy-2-oxoethyl)-2-methyl-6-oxo-1,4,5,6-tetrahydropyridine-3-carboxylate (CAS 338966-57-7)
- CAY10606 (CAS 1159576-98-3)
- Etrasimod Impurity 62 (CAS 3053992-15-4)
- Nitrofurantoin Impurity 2 (CAS 777-34-4)
- FCN437 Impurity 8 (CAS CATO-C4X-33248)
- 2-(1-Amino-2,2-dimethylcyclopentyl)acetic acid (CAS 1514042-25-1)
- 2-Cyclopropoxy-3-formylbenzonitrile (CAS 1243376-34-2)
- Methyl 3-[(2Z)-2-[(dimethylamino)methylidene]-3-oxobutanamido]thiophene-2-carboxylate (CAS 343375-20-2)
- 3-Cyclopentyl-N-(2-(methylthio)-4-phenylthiazol-5-yl)propanamide (CAS 1049238-10-9)
- N-methyl-N-[(3S)-pyrrolidin-3-yl]methanesulfonamide;hydrochloride (CAS 1810074-78-2)
- (R)-1-(2,4,5-trimethylphenyl)propan-1-amine (CAS 1213552-67-0)
- Semaglutide Impurity 183 (CAS 159541-28-3)
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