Brinzolamide Impurity 5 CAS CATO-C4X-19405
| CAS No. | CATO-C4X-19405 |
| Molecular Formula | C21H28N2O9S4 |
| Molecular Weight | 580.72 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Brinzolamide Impurity 5 (CAS CATO-C4X-19405) is a certified pharmaceutical impurity reference standard with the molecular formula C21H28N2O9S4 and a molecular weight of 580.72 g/mol.
Structurally, Brinzolamide Impurity 5 (C21H28N2O9S4) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 580.72 g/mol, it falls into the moderately-high-molecular-weight range. 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.
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 | C21H28N2O9S4 |
| Molecular Weight | 580.72 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 4 |
Related Brinzolamide Standards
- Brinzolamide Impurity 3 (CAS CATO-C4X-19403)
- Brinzolamide Impurity 4 (CAS CATO-C4X-19404)
- Brinzolamide Impurity 11 (CAS CATO-C4X-194011)
- Brinzolamide Impurity 10 (CAS CATO-C4X-194010)
- Brinzolamide Impurity 24 (CAS CATO-C4X-194024)
- Brinzolamide Impurity 9 (CAS CATO-C4X-19409)
- Brinzolamide Impurity 22 (CAS CATO-C4X-194022)
- Brinzolamide Impurity 27 (CAS CATO-C4X-194027)
Recommended Standards
- Peramivir impurity 154 (CAS CATO-C4X-1833154)
- Perospirone Impurity 23 (CAS CATO-C4X-245823)
- N-(Ethylcarbamoyl)-3-(4-((5-formyl-4-methoxy-2-phenyl-1H-imidazol-1-yl)methyl)phenyl)-5-isobutylthiophene-2-sulfonamide (CAS 304462-19-9)
- H-Phe-Leu-Arg-Phe-NH2 (CAS 80690-77-3)
- Anagrelide Impurity 2 (CAS 1020243-02-0)
- Isavuconazole Impurity 235 (CAS CATO-C4X-1236235)
- Prednisone Impurity 16 (CAS 15714-29-1)
- 4-Amino-1H-pyrazolo[3,4-d]pyrimidine-3-carbothioamide (CAS 90213-36-8)
- Methyl (1r,4r)-4-(4-chlorophenyl)cyclohexane-1-carboxylate (CAS 128208-10-6)
- Ethyl 2-(chloromethyl)-6-methoxybenzoate (CAS 81625-30-1)
- 5,5'-((4-Methoxyphenyl)methylene)bis(2-methylfuran) (CAS 86694-55-5)
- 1-Bromo-5-chloro-2-methoxy-3-(trifluoromethyl)benzene (CAS 2167140-49-8)
- Ethyl 6,7-dimethyl-3-(trifluoromethyl)quinoxaline-2-carboxylate (CAS 1243580-61-1)
- Peptide 436 (CAS CATO-CPTD788436)
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