6-Bromo-2H-benzo[e][1,3]thiazine-2,4(3H)-dione CAS 67963-80-8
| CAS No. | 67963-80-8 |
| Molecular Formula | C8H4BrNO2S |
| Molecular Weight | 258.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
6-Bromo-2H-benzo[e][1,3]thiazine-2,4(3H)-dione (CAS 67963-80-8) is a high-purity analytical reference standard with the molecular formula C8H4BrNO2S and a molecular weight of 258.09 g/mol.
6-Bromo-2H-benzo[e][1,3]thiazine-2,4(3H)-dione (C8H4BrNO2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C8H4BrNO2S |
| Molecular Weight | 258.09 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- Ethyl 2-hydroxy-3-methylpentanoate (CAS 24323-38-4)
- 2-((Butyl(ethyl)amino)methyl)benzenethiol (CAS 1443325-04-9)
- 1-[3-(chloromethyl)benzoyl]piperidine (CAS 148583-64-6)
- 2'-Formyl-[1,1'-biphenyl]-2-carboxylic acid (CAS 6720-26-9)
- Methyl 2,4-dihydroxy-3-nitrobenzoate (CAS 956105-56-9)
- Insulin Degludec Impurity 27 (CAS CATO-C4X-215727)
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