Pradofloxacin Impurity 1 CAS CATO-C4X-25161
| CAS No. | CATO-C4X-25161 |
| Molecular Formula | C20H21FN4O2 |
| Molecular Weight | 368.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 368.40 g/mol gives Pradofloxacin Impurity 1 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Pradofloxacin Impurity 1 (CAS CATO-C4X-25161, C20H21FN4O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Pradofloxacin Impurity 1 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 368.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C20H21FN4O2 |
| Molecular Weight | 368.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Pradofloxacin Standards
Recommended Standards
- Phenoxymethylpenicillin EP Impurity E (CAS 1049-84-9)
- N-(6-((2-((Furan-2-ylmethyl)amino)-2-oxoethyl)thio)pyridazin-3-yl)benzamide (CAS 1021119-93-6)
- Topiramate Impurity 34 (CAS CATO-C4X-176834)
- (E)-4-(Benzo[d]thiazol-2-yl)-5-(4-methyl-3-nitrophenyl)pent-4-enoic acid (CAS 1164475-61-9)
- Estradiol Valerate EP Impurity F (CAS 18069-79-9)
- Irbesartan Impurity 32 (CAS 886999-35-5)
- Hydralazine Impurity 4 (CAS CATO-C4X-16594)
- Ethyl 2-acetoxyacetate (CAS 623-86-9)
- (5-Bromo-1H-1,2,4-triazol-3-yl)methanol (CAS 23164-67-2)
- 1-(2-Chloroethyl)-1h-1,2,4-triazole hydrochloride (CAS 1417569-97-1)
- (R)-2-((R)-1-(Tert-butoxycarbonyl)-6-oxo-1,7-diazaspiro[4.4]nonan-7-yl)-4-methylpentanoic acid (CAS 387823-67-8)
- N-(4-chloro-2-nitro-6-(trifluoromethyl)phenyl)acetamide (CAS 172215-95-1)
- 5-Chloro-2-(1h-imidazol-1-yl)aniline (CAS 54705-92-9)
- Tirzepatide Impurity 23 X TFA Salt (CAS CATO-C4X-324023)
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