Fluocinonide Impurity 2 CAS 67438-37-3
| CAS No. | 67438-37-3 |
| Molecular Formula | C26H32F2O7 |
| Molecular Weight | 494.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Fluocinonide Impurity 2 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.
CATO supplies Fluocinonide Impurity 2 (CAS 67438-37-3), a pharmacopoeial impurity reference standard (molecular formula C26H32F2O7, MW 494.52 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C26H32F2O7, Fluocinonide Impurity 2 contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 494.52 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.
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 | C26H32F2O7 |
| Molecular Weight | 494.52 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >90% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | F-containing |
Related Fluocinonide Standards
Recommended Standards
- n-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1h-pyrazol-4-yl)-3-nitro-4-{[(pyridin-3-yl)methyl]amino}benzene-1-sulfonamide (CAS 763090-97-7)
- Fluocinolone Acetonide EP Impurity M (CAS 356-12-7)
- O-Methyl-N-(9H-purin-6-yl)hydroxylamine (CAS 17124-24-2)
- Diflorasone Diacetate (CAS 33564-31-7)
- Solifenacin Impurity 35 (CAS 7500-45-0)
- Lefamulinum Impurity 21 (CAS CATO-C4X-304721)
- Valaciclovir EP Impurity R hydrochloride (CAS 142963-60-8（free base）)
- 9-cis-Retinyl Oleate (CAS 79433-57-1)
- 4,4'-(Hydrazine-1,2-diylbis(oxomethylene))bis(4,1-phenylene)diboronic acid, pinaool ester (CAS 2096338-52-0)
- tert-Butyl 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isonicotinate (CAS 1310385-01-3)
- 4-Amino-6-(3,4-dimethoxyphenyl)-3-(3-(trifluoromethyl)phenyl)-3,7-dihydropyrimido[5,4-d]pyrimidine-2,8-dione (CAS 379708-00-6)
- 2-(1H-1,2,4-Triazol-3-yl)pyrimidine (CAS 343341-33-3)
- 2-(Carboxymethyl)pyrazolo[1,5-a]pyridine-3-carboxylic Acid (CAS 1446333-71-6)
- Semaglutide impurity 104(Fmoc-D-His-Aib) (CAS 2171211-18-8)
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