Flurbiprofen impurity 103 CAS CATO-C4X-1444103
| CAS No. | CATO-C4X-1444103 |
| Molecular Formula | C19H19FO4 |
| Molecular Weight | 330.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Flurbiprofen impurity 103 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Flurbiprofen impurity 103 (CAS CATO-C4X-1444103), a pharmacopoeial impurity reference standard (molecular formula C19H19FO4, MW 330.35 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Flurbiprofen impurity 103 (C19H19FO4) is characterized by a flavonoid core, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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 | C19H19FO4 |
| Molecular Weight | 330.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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 |
| Halogen Content | F-containing |
Related Flurbiprofen Standards
- Flurbiprofen Impurity 104 (CAS CATO-C4X-1444104)
- Flurbiprofen Impurity 109 (CAS 119623-42-6)
- Flurbiprofen Impurity 25 (CAS 91503-88-7)
- (R)-Flurbiprofen Axetil (Mixture of Diastereomers) (CAS 2375240-97-2)
- (S)-Flurbiprofen Axetil (Mixture of Diastereomers) (CAS 1401087-64-6)
- Flurbiprofen Axetil (CAS 91503-79-6)
- Flurbiprofen Impurity 38 (CAS 26039-74-7)
- Flurbiprofen Impurity 35 (CAS CATO-C4X-144435)
Recommended Standards
- Linezolid Impurity 82 (CAS CATO-C4X-107382)
- Linezolid Impurity 45 (CAS 168828-81-7)
- tert-Butyl 3-[4-(trifluoromethyl)phenyl]piperazine-1-carboxylate (CAS 886767-93-7)
- Tert-butyl 3-(3-(trifluoromethyl)phenyl)piperazine-1-carboxylate (CAS 886767-85-7)
- Rosuvastatin Impurity 16 (Calcium Salt) (CAS CATO-C4X-116916)
- Ruxolitinib Impurity 215 (CAS CATO-C4X-2058215)
- Butylhydroxyanisole Impurity 2 (CAS 1911-86-0)
- Lansoprazole Impurity 28 (CAS 152402-97-6)
- 4-Chloro-2-(difluoromethyl)-5-(fluoromethyl)pyridine (CAS 1803710-11-3)
- 4,4-Difluoro-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenylsulfonyl)piperidine (CAS 1628016-72-7)
- 2-(Aminomethyl)-5-(difluoromethyl)-6-hydroxy-3-nitropyridine (CAS 1804862-96-1)
- 1,5-Dibromo-2-(difluoromethoxy)-3-fluorobenzene (CAS 1803814-87-0)
- 4-(3-Chlorophenyl)but-3-yn-2-ol (CAS 265661-01-6)
- Neuropeptide Y (13-36) (porcine) (CAS 113662-54-7)
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