Ofloxacin EP Impurity A CAS 110548-07-7
| CAS No. | 110548-07-7 |
| Molecular Formula | C13H9F2NO4 |
| Molecular Weight | 281.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ofloxacin EP Impurity A is closely related to a nitrogen-containing heterocyclic scaffold, 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 Ofloxacin EP Impurity A (CAS 110548-07-7), a pharmacopoeial impurity reference standard (molecular formula C13H9F2NO4, MW 281.21 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C13H9F2NO4, Ofloxacin EP Impurity A contains a nitrogen-containing heterocyclic scaffold, 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 281.21 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.
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.
CATO manufactures Ofloxacin EP Impurity A under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H9F2NO4 |
| Molecular Weight | 281.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >96% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Ofloxacin Standards
- Ofloxacin Impurity 9 (CAS CATO-C4X-17179)
- Ofloxacin Impurity 8 (CAS CATO-C4X-17178)
- Ofloxacin Impurity N1 (CAS 82419-34-9)
- Ofloxacin EP Impurity B (CAS 123155-82-8)
- Ofloxacin EP Impurity C (CAS 95848-94-5)
- Ofloxacin EP Impurity E (CAS 82419-52-1)
- Ofloxacin EP Impurity D (CAS 197291-75-1)
- Ofloxacin (CAS 82419-36-1)
Recommended Standards
- Levofloxacin EP Impurity F (CAS 100986-89-8)
- Levofloxacin Impurity 16 (CAS 82419-35-0)
- Moxifloxacin Impurity 23 (CAS 154093-72-8)
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- Leflunomide Impurity 18 (CAS 17153-20-7)
- Perindopril Impurity 95 t-Butylamine (CAS CATO-C4X-125295)
- Dapoxetine Impurity 57 (CAS 126113-24-4)
- (3R)-3-aminotetrahydrofuran-2,5-dione (CAS 756447-06-0)
- N-(4-fluorophenyl)-2-(2-formylphenoxy)acetamide (CAS 428489-90-1)
- Testosterone Impurity 19 (CAS CATO-C4X-132619)
- (11bR)-2,6-Dibromo-N,N-bis((S)-1-phenylethyl)dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-amine (CAS 1642864-91-2)
- 1,3-Bis(3,4-dihydroisoquinolin-2(1h)-yl)propane-1,3-dione (CAS 565192-27-0)
- Lysolipin I (CAS 59113-57-4)
- Neuropeptide Y (13-36) (porcine) (CAS 113662-54-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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