3-((4-Chlorophenyl)sulfonyl)-7-hydroxy-2H-chromen-2-one CAS 861520-20-9
| CAS No. | 861520-20-9 |
| Molecular Formula | C15H9ClO5S |
| Molecular Weight | 336.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-((4-Chlorophenyl)sulfonyl)-7-hydroxy-2H-chromen-2-one is closely related to a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-((4-Chlorophenyl)sulfonyl)-7-hydroxy-2H-chromen-2-one (CAS 861520-20-9) is a high-purity analytical reference standard with the molecular formula C15H9ClO5S and a molecular weight of 336.75 g/mol.
3-((4-Chlorophenyl)sulfonyl)-7-hydroxy-2H-chromen-2-one (C15H9ClO5S) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage, chlorine 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C15H9ClO5S |
| Molecular Weight | 336.75 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2-(1,3,4-Oxadiazol-2-yl)phenyl 4-chlorobenzene-1-sulfonate (CAS 240115-64-4)
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- 4-Chloro-5-nitro-1-(phenylsulfonyl)-1H-indole (CAS 1956386-15-4)
- 1-(4-Chlorobenzoyl)-2-methylpiperazine (CAS 1240565-53-0)
- Z-Ser(Tos)-OMe (CAS 1492-52-0)
- 2-Bromo-3-fluorobenzyl alcohol (CAS 1184915-45-4)
- Quercetin-3 '- O-glucuronide (CAS 328006-77-5)
- (Z)-2-(benzo[c][1,2,5]oxadiazol-5-yloxy)-N'-hydroxyacetimidamide (CAS 690632-81-6)
- 2-(4-Amino-1h-pyrazol-1-yl)-N-ethylacetamide (CAS 1152939-93-9)
- Methyl 4-chloro-6-oxo-1-(3-(trifluoromethyl)phenyl)-1,6-dihydropyridazine-3-carboxylate (CAS 129109-18-8)
- (2-Bromo-3-methylphenyl)hydrazine hydrochloride (CAS 156941-75-2)
- 2-(Bromomethyl)-5-(trifluoromethyl)pyridin-3-amine (CAS 1227588-64-8)
- Semaglutide Impurity 157 (x TFA Salt) (CAS CATO-C4X-2226157)
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