Ciprofloxacin EP Impurity B CAS 93107-11-0
| CAS No. | 93107-11-0 |
| Molecular Formula | C17H19N3O3 |
| Molecular Weight | 313.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Ciprofloxacin EP Impurity B is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 313.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Ciprofloxacin EP Impurity B (CAS 93107-11-0, C17H19N3O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 Ciprofloxacin 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 | C17H19N3O3 |
| Molecular Weight | 313.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 3 |
Related Ciprofloxacin Standards
- Ciprofloxacin EP Impurity B HCl (CAS 2727369-47-1)
- Ciprofloxacin Impurity 23 (CAS CATO-C4X-136223)
- Ciprofloxacin Impurity 22 (CAS CATO-C4X-136222)
- Ciprofloxacin Impurity 48 (CAS CATO-C4X-136248)
- Ciprofloxacin EP Impurity C (CAS 103222-12-4)
- Ciprofloxacin Impurity 2 (CAS 528851-85-6)
- Ciprofloxacin Impurity 42 (CAS CATO-C4X-136242)
- Ciprofloxacin Impurity 37 (CAS CATO-C4X-136237)
Recommended Standards
- Telmisartan Impurity 63 (CAS CATO-C4X-135963)
- Codeine Phosphate Hemihydrate EP Impurity K (CAS 508-54-3)
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- Indobufen Impurity 1 (CAS CATO-C4X-17921)
- Cinnarizine EP Impurity E (CAS 216581-01-0)
- Pirfenidone Impurity 32 (CAS 92-53-5)
- Larotrectinib impurity 9 (CAS CATO-C4X-23809)
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- (Gly1,Ser3·22,Gln?·3?,Thr?,Arg1?,Tyr21,Ala23·31,Aib32)-Pancreatic Polypeptide (human) (CAS 313988-89-5)
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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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com