Gatifloxacin Impurity 13 CAS 103460-87-3
| CAS No. | 103460-87-3 |
| Molecular Formula | C20H23F2N3O3 |
| Molecular Weight | 391.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C20H23F2N3O3, Gatifloxacin Impurity 13 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 391.41 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Gatifloxacin Impurity 13 (CAS 103460-87-3) is a certified pharmaceutical impurity reference standard with the molecular formula C20H23F2N3O3 and a molecular weight of 391.41 g/mol.
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 | C20H23F2N3O3 |
| Molecular Weight | 391.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Gatifloxacin Standards
- Gatifloxacin Impurity 10 (CAS 1335198-95-2)
- Gatifloxacin Impurity 19 (CAS 1798008-43-1)
- Gatifloxacin Impurity C79 (CAS 182868-72-0)
- Gatifloxacin Impurity 14 (CAS 114213-69-3)
- Gatifloxacin Impurity 27 (CAS CATO-C4X-125327)
- Gatifloxacin Impurity 35 (CAS 3104323-45-4)
- Gatifloxacin-d4 (CAS 1190043-25-4)
- Gatifloxacin Impurity 17 (CAS 1048972-28-6)
Recommended Standards
- Ezetimibe Impurity 66 (CAS 204589-68-4)
- 2,2'-(Azanediylbis(propane-3,1-diyl))bis(isoindoline-1,3-dione) (CAS 102202-87-9)
- tert-Butyl 2-(2-(2-(2-(4-amino-2,6-difluorophenoxy)ethoxy)ethoxy)ethoxy)acetate (CAS 2227348-91-4)
- 2-(4-Fluorophenyl)-4-(4-(2-fluorophenyl)piperazin-1-yl)pyrazolo[1,5-a]pyrazine (CAS 1111319-86-8)
- Oseltamivir Impurity 26 (CAS CATO-C4X-172026)
- Quinapril EP Impurity C (CAS 82768-85-2)
- Peramivir impurity 148 (CAS CATO-C4X-1833148)
- (S)-Naphthalen-1-yl 2-acetamido-4-(methylthio)butanoate (CAS 69975-69-5)
- (5E)-5-[(5-Bromo-2-furyl)methylene]-2-mercapto-3-phenyl-3,5-dihydro-4H-imidazol-4-one (CAS 1142201-50-0)
- Ethyl 2-[(chloroacetyl)amino]-6-methyl-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate (CAS 1221750-39-5)
- ortho-Methoxytopolin Riboside (CAS 23660-98-2)
- 5-Cyclopropoxy-2-isopropoxy-4-(methylthio)pyridine (CAS 1243379-94-3)
- Diisopropyl 3-hydroxycyclobutane-1,1-dicarboxylate (CAS 869109-31-9)
- Semaglutide impurity 109 (CAS CATO-C4X-2226109)
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