Moxifloxacin Impurity 13 CAS 1620445-13-7
| CAS No. | 1620445-13-7 |
| Molecular Formula | C21H24FN3O5 |
| Molecular Weight | 417.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Moxifloxacin Impurity 13 is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Moxifloxacin Impurity 13 (CAS 1620445-13-7), a pharmacopoeial impurity reference standard (molecular formula C21H24FN3O5, MW 417.43 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, Moxifloxacin Impurity 13 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 417.43 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.
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 | C21H24FN3O5 |
| Molecular Weight | 417.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >90% |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Moxifloxacin Standards
- Moxifloxacin impurity 182 (CAS CATO-C4X-1074182)
- Moxifloxacin impurity 131 (CAS CATO-C4X-1074131)
- Moxifloxacin EP Impurity H (CAS 721970-35-0)
- Moxifloxacin EP Impurity F (CAS 721970-37-2)
- Moxifloxacin Hydrochloride EP Impurity C (CAS 1029364-75-7)
- Moxifloxacin impurity 185 (CAS CATO-C4X-1074185)
- Moxifloxacin Impurity 192 (CAS CATO-C4X-1074192)
- Moxifloxacin Impurity 193 (CAS CATO-C4X-1074193)
Recommended Standards
- Pitavastatin Impurity 111 (CAS CATO-C4X-1037111)
- Methyl 3-(2,6-difluorobenzamido)-5-(4-ethoxyphenyl)thiophene-2-carboxylate (CAS 890817-95-5)
- Sitafloxacin impurity 81 (CAS CATO-C4X-115581)
- 2-({[4-(dimethylamino)-6-(methylthio)-1,3,5-triazin-2-yl]amino}methylidene)-4,4,4-trifluoro-1-(2-thienyl)butane-1,3-dione (CAS 649578-93-8)
- Eldecalcitol Impurity 4 (CAS CATO-C4X-21404)
- Citalopram Impurity 75 (CAS CATO-C4X-110975)
- Erlotinib Impurity 2 (CAS 183321-85-9)
- 2,3-Dimethoxy-N-(4-methoxybenzo[d]thiazol-2-yl)benzamide (CAS 895440-81-0)
- 1H-Pyrrole-2,5-dione, 1,1'-(methylenedi-4,1-phenylene)bis-, polymer with 2,4-bis[(4-aminophenyl)methyl]benzenamine and 4,4'-methylenebis[benzenamine] (CAS 102900-05-0)
- 4-(4-Thiocyanatophenyl)morpholine (CAS 326173-43-7)
- 4-Methanesulfonyl-2-nitro-1-(propan-2-yloxy)benzene (CAS 848178-51-8)
- (2S)-1-ethoxypropan-2-amine hydrochloride (CAS 1380094-35-8)
- Phenylephrine Impurity 23 (CAS CATO-C4X-146723)
- D-[Ser]8-Semaglutide (CAS CATO-C4X-2226207)
Why CATO?
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