Sulbactam EP Impurity E CAS 76646-91-8
| CAS No. | 76646-91-8 |
| Molecular Formula | C8H9Br2NO5S |
| Molecular Weight | 391.03 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Sulbactam EP Impurity E (C8H9Br2NO5S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Sulbactam EP Impurity E (CAS 76646-91-8), a pharmacopoeial impurity reference standard (molecular formula C8H9Br2NO5S, MW 391.03 g/mol) used for the identification and quantification of trace impurities in APIs.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Sulbactam EP Impurity E 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 | C8H9Br2NO5S |
| Molecular Weight | 391.03 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Sulbactam Standards
- Sulbactam Impurity 19 (CAS CATO-C4X-175619)
- Sulbactam Impurity 33 (CAS CATO-C4X-175633)
- Sulbactam Impurity 13 (CAS CATO-C4X-175613)
- Sulbactam EP Impurity F (CAS 24158-88-1)
- Sulbactam Pivoxil (CAS 69388-79-0)
- Sulbactam Impurity 34 (CAS CATO-C4X-175634)
- Sulbactam Impurity 36 (CAS CATO-C4X-175636)
- Sulbactam Impurity 18 (CAS CATO-C4X-175618)
Recommended Standards
- 2-Bromo-4-(1,1,1,3,3,3-hexafluoropropan-2-yloxy)-1-(trifluoromethyl)benzene (CAS 1779132-37-4)
- 1,1,1,3,12,13-Hexachlorotridecane (CAS 865306-23-6)
- 1-Bromo-2-(1,1,1,3,3,3-hexafluoropropan-2-yloxy)-3-(trifluoromethyl)benzene (CAS 1779122-91-6)
- 9,10-Dichloro-1,2,3,4,5,6,7,8-octafluoroanthracene (CAS 219724-46-6)
- Bisoprolol Impurity 115 (CAS CATO-C4X-1247115)
- Ceritinib Impurity 16 (CAS CATO-C4X-1048916)
- Tacrolimus Impurity 27 (CAS 104987-25-9)
- 1,3-Dimethyl-6-propyl-1H-pyrazolo[3,4-d]pyrimidin-4-ol (CAS 799295-88-8)
- 2-Chloro-4-ethynyl-5-fluoropyrimidine (CAS 2445786-25-2)
- Methyl 2-amino-3-((1-methyl-1h-imidazol-2-yl)thio)butanoate (CAS 1706428-08-1)
- 5-bromo-2-methyl-benzotriazole (CAS 191230-40-7)
- 1-propyl-1H-imidazole-4-carboxylic acid (CAS 149096-35-5)
- 1-Phenylcyclobutanecarboxylic Acid (CAS 37828-19-6)
- MLCK inhibitor peptide 18 (CAS 224579-74-2)
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