7-Bromo-5-oxo-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepine-9-sulfonyl Chloride CAS 1989659-72-4
| CAS No. | 1989659-72-4 |
| Molecular Formula | C9H7BrClNO4S |
| Molecular Weight | 340.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-Bromo-5-oxo-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepine-9-sulfonyl Chloride is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine/bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
7-Bromo-5-oxo-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepine-9-sulfonyl Chloride (CAS 1989659-72-4) is a high-purity analytical reference standard with the molecular formula C9H7BrClNO4S and a molecular weight of 340.58 g/mol.
The molecular framework of 7-Bromo-5-oxo-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepine-9-sulfonyl Chloride (C9H7BrClNO4S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H7BrClNO4S |
| Molecular Weight | 340.58 g/mol |
| Purity | 97%+ |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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