Levofloxacin Impurity 41 CAS CATO-C4X-137141
| CAS No. | CATO-C4X-137141 |
| Molecular Formula | C19H21ClFN3O4 |
| Molecular Weight | 409.84 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Levofloxacin Impurity 41 (CAS CATO-C4X-137141, C19H21ClFN3O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, Levofloxacin Impurity 41 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 409.84 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 certified reference material (CRM), Levofloxacin Impurity 41 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 | C19H21ClFN3O4 |
| Molecular Weight | 409.84 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
Related Levofloxacin Standards
- Levofloxacin Impurity 99 (CAS 902172-11-6)
- Levofloxacin Impurity 98 (CAS CATO-C4X-137198)
- Levofloxacin Impurity 37 (CAS 2130840-90-1)
- Levofloxacin Impurity 46 (CAS CATO-C4X-137146)
- Levofloxacin Impurity 55 (CAS CATO-C4X-137155)
- Levofloxacin Impurity 53 (CAS CATO-C4X-137153)
- Levofloxacin Impurity 63 (CAS CATO-C4X-137163)
- Levofloxacin Impurity 86 (CAS CATO-C4X-137186)
Recommended Standards
- 6-(Benzyloxy)-N-(3-chloro-4-fluorophenyl)-7-methoxyquinazolin-4-amine (CAS 913819-12-2)
- (2R,3R,4S,5R)-2-(6-Amino-8-((4-chlorophenyl)thio)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol (CAS 85352-87-0)
- Methyl (2Z)-2-(4-chlorobenzenesulfonyl)-3-[(2,3-dihydro-1,4-benzodioxin-6-yl)amino]prop-2-enoate (CAS 1327187-59-6)
- 3-(4-Chlorophenyl)-5,6-bis(furan-2-yl)-4-imino-1H,2H,3H,4H-furo[2,3-d]pyrimidine-2-thione (CAS 685106-51-8)
- N-Nitroso Isoprenaline Impurity 31 (CAS CATO-C4X-277531)
- Benzylpenicillin Impurity 49 (CAS CATO-C4X-189949)
- Venlafaxine Impurity 37 (CAS CATO-C4X-143437)
- Ethynyl Estradiol 17-Acetate (CAS 21221-29-4)
- 3,3-Dimethyl-3,4-dihydro-1H-furo[3,4-b]indol-1-one (CAS 139927-26-7)
- N,N-Diethyl-3-(4-piperidinyloxy)anilinehydrochloride (CAS 1220028-17-0)
- Atomoxetine Impurity 14 HCl (CAS 116939-14-1)
- Fmoc-D-Hph(2-Me)-OH (CAS 1260594-48-6)
- Methyl (2S,4S)-4-(2-benzyl-4-chlorophenoxy)-2-pyrrolidinecarboxylate (CAS 1217808-99-5)
- Semaglutide Impurity 128 (CAS 2490269-78-6)
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