Levofloxacin Impurity 64 CAS 1607796-83-7
| CAS No. | 1607796-83-7 |
| Molecular Formula | C15H14FNO5 |
| Molecular Weight | 307.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Levofloxacin Impurity 64 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.
CATO supplies Levofloxacin Impurity 64 (CAS 1607796-83-7), a pharmacopoeial impurity reference standard (molecular formula C15H14FNO5, MW 307.27 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Levofloxacin Impurity 64 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 307.27 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.
Physical & Chemical Properties
| Molecular Formula | C15H14FNO5 |
| Molecular Weight | 307.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Levofloxacin Standards
- Levofloxacin impurity 69 (CAS CATO-C4X-137169)
- Levofloxacin impurity 74 (CAS CATO-C4X-137174)
- Levofloxacin Impurity 26 (CAS 106939-34-8)
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Recommended Standards
- Moxifloxacin Impurity 54 (CAS CATO-C4X-107454)
- 2402AE 3-Oxo-3-phenyl-N-[2-(trifluoromethyl)phenyl]-propanamide 393-34-0 C16H12F3NO2 (CAS 393-34-0)
- Varenicline Impurity 18 (CAS 230615-70-0)
- N-Benzyl-5-methyl-2-(trifluoromethyl)-[1,2,4]triazolo[1,5-a]pyrimidin-7-amine (CAS 946339-53-3)
- Acipimox Impurity 19 (CAS CATO-C4X-186619)
- Bazedoxifene Acetate Impurity 9 (CAS 104599-10-2)
- Acetylcysteine Impurity 17 (CAS CATO-C4X-153217)
- 2-(4-Fluoro-1H-pyrazol-1-yl)ethanol (CAS 1207961-59-8)
- 4-(Dimethylamino)-1-(2-ethylhexyl)pyridin-1-ium chloride (CAS 92886-00-5)
- 6,6,7-Trimethyl-6,7-dihydro-[1,3]dioxolo[4,5-f]benzofuran (CAS 63282-93-9)
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- Pitavastatin Impurity 104 (CAS CATO-C4X-1037104)
- 2,3-Dihydro-1,4-benzodioxin-6-yl(phenyl)methanone (CAS 93637-87-7)
- [2-31]-Semaglutide C (x TFA Salt) (CAS CATO-C4X-2226118)
Why CATO?
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