Ofloxacin Impurity 9 CAS CATO-C4X-17179
| CAS No. | CATO-C4X-17179 |
| Molecular Formula | C12H7F2NO4 |
| Molecular Weight | 267.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Ofloxacin Impurity 9 (CAS CATO-C4X-17179), a pharmacopoeial impurity reference standard (molecular formula C12H7F2NO4, MW 267.19 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Ofloxacin Impurity 9 (C12H7F2NO4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 267.19 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C12H7F2NO4 |
| Molecular Weight | 267.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| 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 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Ofloxacin Standards
- Ofloxacin EP Impurity A (CAS 110548-07-7)
- 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
- 4834-98-4 Dodecanedioyl dichloride DTXSID40369805 (CAS 4834-98-4)
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- 6-Acetyl-2-(2,4-difluorophenyl)-2,3,4,5-tetrahydro-1,2,4-triazine-3,5-dione (CAS 477854-19-6)
- 1-(3-Bromobut-3-en-1-yl)-4-(tert-butyl)benzene (CAS 1049130-96-2)
- Desmopressin EP Impurity D TFA salt (CAS CATO-C4X-22154)
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- Bempedoic Acid Impurity 26 (CAS CATO-C4X-218926)
- Ethyl[2-(pyridin-2-yl)ethyl]amine (CAS 6304-26-3)
- 2-(4-Methyl-1,2,3-thiadiazole-5-carbonyl)-N-phenylhydrazine-1-carboxamide (CAS 477872-18-7)
- 2-(3-Azabicyclo[3.3.1]nonan-9-yl)-N-(furan-2-ylmethyl)acetamide (CAS 1422142-44-6)
- ((1R,3S,4S)-2-azabicyclo[2.2.1]Heptan-3-yl)methanol (CAS 448949-63-1)
- 5-hydroxypyridazine-4-carboxylic acid (CAS 21579-35-1)
- 4-Fluoro-N-({5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]pyridin-3-yl}methyl)benzamide (CAS 1358712-01-2)
- Des-Asp15-Tirzepatide (CAS CATO-CPTD788958)
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