Ofloxacin EP Impurity B CAS 123155-82-8
| CAS No. | 123155-82-8 |
| Molecular Formula | C17H20FN3O2 |
| Molecular Weight | 317.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Ofloxacin EP Impurity B (C17H20FN3O2) contains a steroid core, 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 317.36 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies Ofloxacin EP Impurity B (CAS 123155-82-8), a pharmacopoeial impurity reference standard (molecular formula C17H20FN3O2, MW 317.36 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
CATO manufactures Ofloxacin EP Impurity B 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 | C17H20FN3O2 |
| Molecular Weight | 317.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Ofloxacin Standards
- Ofloxacin Impurity N1 (CAS 82419-34-9)
- Ofloxacin Impurity 8 (CAS CATO-C4X-17178)
- Ofloxacin EP Impurity C (CAS 95848-94-5)
- Ofloxacin EP Impurity E (CAS 82419-52-1)
- Ofloxacin EP Impurity A (CAS 110548-07-7)
- Ofloxacin EP Impurity D (CAS 197291-75-1)
- Ofloxacin (CAS 82419-36-1)
- (R)-Ofloxacin-d3 (CAS 1346617-10-4)
Recommended Standards
- Imipenem Impurity 99 (CAS CATO-C4X-166299)
- 6-Methyl-4-oxo-N-(1-(thiophen-2-yl)propyl)-4,5-dihydro-[1,2,3]triazolo[1,5-a]pyrazine-3-carboxamide (CAS 1421585-79-6)
- Imipenem Impurity 4 (CAS CATO-C4X-16624)
- 2-((((3R,4S)-3,4-difluorocyclopentyl)methyl)sulfonyl)benzo[d]thiazole (CAS 2448339-48-6)
- Upadacitinib Impurity 37 (CAS CATO-C4X-240537)
- Epinephrine /Adrenaline Impurity 106 (CAS CATO-C4X-1849106)
- Dotinurad Impurity 43 (CAS CATO-C4X-249443)
- Melanocyte Protein PMEL 17 (185-193) (human, bovine, mouse) (CAS 162558-10-3)
- methyl(4H-1,2,4-triazol-3-ylmethyl)amine hydrochloride (CAS 1803562-00-6)
- 5-Chloro-N-[2-oxo-3-[[4-(3-oxo-4-morpholinyl)phenyl]amino]propyl]-2-thiophenecarboxamide (CAS 1161719-52-3)
- Methyl 2-bromo-3-oxobutanoate (CAS 3600-18-8)
- tert-Butyl 3,4-dihydroquinoxaline-1(2H)-carboxylate (CAS 887590-25-2)
- 3,4-Dimethylhexane-2,5-dione (CAS 25234-79-1)
- Peptide Impurity 70 TFA Salt (CAS CATO-CPTD788570)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com