7-(3,5-Dichlorophenyl)-5-hydroxy-2H-1,3-benzoxathiol-2-one CAS 315240-93-8
| CAS No. | 315240-93-8 |
| Molecular Formula | C13H6Cl2O3S |
| Molecular Weight | 313.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 7-(3,5-Dichlorophenyl)-5-hydroxy-2H-1,3-benzoxathiol-2-one (C13H6Cl2O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 313.16 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
7-(3,5-Dichlorophenyl)-5-hydroxy-2H-1,3-benzoxathiol-2-one (CAS 315240-93-8) is a high-purity analytical reference standard with the molecular formula C13H6Cl2O3S and a molecular weight of 313.16 g/mol.
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 | C13H6Cl2O3S |
| Molecular Weight | 313.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Dichlorophenyl Standards
- 7-(2,4-Dichlorophenyl)-5-hydroxybenzo[d][1,3]oxathiol-2-one (CAS 327078-58-0)
- Ethyl 1-(2,6-dichlorophenyl)-3,5-dimethyl-1H-pyrazole-4-carboxylate (CAS 1006441-21-9)
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Recommended Standards
- Methyl 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinoline-4-carboxylate (CAS 2247162-79-2)
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- N-[(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)methyl]-1,8-naphthyridine-2-carboxamide (CAS 2246773-81-7)
- Methyl 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinoline-8-carboxylate (CAS 1627722-90-0)
- Lithium 5-bromo-1,3,4-thiadiazole-2-carboxylate (CAS 2248327-17-3)
- N-(2-((3-Cyano-6-methylquinolin-2-yl)amino)ethyl)-2-methylbenzamide (CAS 606105-44-6)
- Prednisolone 21-beta-D-Glucuronide- Sodium Salt (CAS 889463-89-2)
- 5-Ethynyl-2,3-dimethoxypyridine (CAS 1256818-53-7)
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- 3,3,3-trifluoropropanoyl chloride 3,3,3-tris(fluoranyl)propanoyl chloride 41463-83-6 A825563 (CAS 41463-83-6)
- N-((2S,3S,4R)-3,4-Dihydroxy-1-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)nonan-2-yl)tetracosanamide (CAS 383187-82-4)
- 4,6-Dimethyl-3-hydroxypyridine (CAS 27296-77-1)
- D-[Ser]8-Semaglutide (CAS CATO-CPTD788632)
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