Fluconazole EP Impurity B CAS 871550-15-1
| CAS No. | 871550-15-1 |
| Molecular Formula | C15H14FN9O |
| Molecular Weight | 355.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Fluconazole EP Impurity B (C15H14FN9O) 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 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 355.33 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Fluconazole EP Impurity B (CAS 871550-15-1), a pharmacopoeial impurity reference standard (molecular formula C15H14FN9O, MW 355.33 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.
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 | C15H14FN9O |
| Molecular Weight | 355.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 9 |
Related Fluconazole Standards
- Fluconazole Impurity 23 (CAS 1609495-95-5)
- Fluconazole Impurity 36 (CAS CATO-C4X-101936)
- Fluconazole Impurity 16 (CAS CATO-C4X-101916)
- Fluconazole Impurity 42 (CAS CATO-C4X-101942)
- Fluconazole Impurity 27 (CAS CATO-C4X-101927)
- Fluconazole EP Impurity I (CAS 749821-19-0)
- Fluconazole EP Impurity I (R-Isomer) (CAS CATO-C4X-101967)
- Fluconazole N-Oxide (CAS 1997296-62-4)
Recommended Standards
- Moxifloxacin impurity 201 (CAS CATO-C4X-1074201)
- 85342-62-7 HNT N-Hydroxynaphthalimide triflate N-Hydroxynaphthalimide trifluoromethanesulfonate NHN-TF (CAS 85342-62-7)
- Beflubutamid (CAS 113614-08-7)
- N-(4-Methoxyphenyl)-1-methyl-3-(trifluoromethyl)-1H-thieno[2,3-c]pyrazole-5-carboxamide (CAS 338400-58-1)
- Ibrutinib Impurity 89 (CAS CATO-C4X-106489)
- Moxifloxacin Impurity 25 (CAS 143158-55-8)
- Cephalosporin Impurity 2 (CAS 1269661-23-5)
- (3-Isopropoxyphenyl)(phenyl)methanol (CAS 1410128-59-4)
- (S)-2-Amino-N-((6-methoxypyridazin-3-yl)methyl)-N-methylpropanamide (CAS 1353996-39-0)
- 2-(Azetidin-3-yl)-5-(trifluoromethyl)pyridine (CAS 1260779-70-1)
- 5-(2-Bromophenyl)-5-oxopentanoic acid (CAS 124576-25-6)
- 2-(5-Methylpyridin-2-yl)propan-2-ol hydrochloride (CAS 2155852-20-1)
- Gentamicin A (CAS 13291-74-2)
- Semaglutide impurity 237 (CAS CATO-C4X-2226237)
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