7-Chloro-2,3-dihydrobenzo[b][1,4]thiazepin-4(5h)-one CAS 75620-23-4
| CAS No. | 75620-23-4 |
| Molecular Formula | C9H8ClNOS |
| Molecular Weight | 213.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
7-Chloro-2,3-dihydrobenzo[b][1,4]thiazepin-4(5h)-one (CAS 75620-23-4) is a high-purity analytical reference standard with the molecular formula C9H8ClNOS and a molecular weight of 213.68 g/mol.
7-Chloro-2,3-dihydrobenzo[b][1,4]thiazepin-4(5h)-one (C9H8ClNOS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; 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 | C9H8ClNOS |
| Molecular Weight | 213.68 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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- N-Boc-Val-Dil-Dap-Doe (CAS 135383-62-9)
- 6-Amino-5-bromo-3-methylpyrimidine-2,4(1H,3H)-dione (CAS 7150-03-0)
- Cariprazine Impurity 16 (CAS 76325-96-7)
- n-((1-Ethyl-1h-pyrazol-5-yl)methyl)-2-methoxyethan-1-amine (CAS 1342048-09-2)
- 4-Bromo-6-chloronicotinonitrile (CAS 1354021-07-0)
- 4-o-tolylpiperidine (CAS 630116-52-8)
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