Bromfenac Impurity 7 CAS 61941-56-8
| CAS No. | 61941-56-8 |
| Molecular Formula | C15H12NO3 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 277.25 g/mol gives Bromfenac Impurity 7 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Bromfenac Impurity 7 (CAS 61941-56-8) is a certified pharmaceutical impurity reference standard with the molecular formula C15H12NO3Na and a molecular weight of 277.25 g/mol.
Structurally, Bromfenac Impurity 7 (C15H12NO3Na) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.5, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 277.25 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Bromfenac Impurity 7 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.
Physical & Chemical Properties
| Molecular Formula | C15H12NO3 Na |
| Molecular Weight | 277.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >90% |
| 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 |
| Degree of Unsaturation (DBE) | 10.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 1 |
Related Bromfenac Standards
- Bromfenac Impurity 30 (CAS 102414-22-2)
- Bromfenac Sodium Sesquihydrate (CAS 120638-55-3)
- Bromfenac Impurity 30 (CAS 1279501-08-4)
- Bromfenac Impurity 3 (CAS 1391052-54-2)
- Bromfenac Impurity 76 (CAS 1623751-93-8)
- Bromfenac Impurity 33 (CAS 1644279-16-2)
- Bromfenac Impurity N2 (CAS 1798431-98-7)
- Bromfenac N-β-D-Glucoside (CAS 212266-82-5)
Recommended Standards
- Calcifediol Impurity 8 (CAS 78782-98-6)
- Etrasimod Impurity 13 (CAS CATO-C4X-321413)
- Apremilast Impurity 114 (CAS CATO-C4X-1009114)
- (1R,3S)-3-aminocyclohexane-1-carbonitrile hydrochloride (CAS 1403323-06-7)
- 4-((1-Oxoisoindolin-2-yl)methyl)benzoic acid (CAS 503039-50-7)
- 6-[4-(Trifluoromethoxy)phenyl]-2-pyridinecarbaldehyde (CAS 887979-25-1)
- 6-(dimethylamino)pyridazine-3-carboxylic acid (CAS 1092297-91-0)
- 4-Bromo-3,5-dichlorobenzotrifluoride (CAS 118754-53-3)
- Methyl 5-((methylamino)methyl)furan-2-carboxylate (CAS 893740-55-1)
- Semaglutide Impurity 131 (CAS 2618647-80-4)
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