2-(4-Methoxyphenyl)-4-oxo-4H-chromen-3-yl 4-methoxybenzenesulfonate CAS 301193-65-7
| CAS No. | 301193-65-7 |
| Molecular Formula | C23H18O7S |
| Molecular Weight | 438.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-(4-Methoxyphenyl)-4-oxo-4H-chromen-3-yl 4-methoxybenzenesulfonate.
2-(4-Methoxyphenyl)-4-oxo-4H-chromen-3-yl 4-methoxybenzenesulfonate (CAS 301193-65-7), molecular formula C23H18O7S and molecular weight 438.45 g/mol, is a CATO reference standard with documented purity and traceability.
2-(4-Methoxyphenyl)-4-oxo-4H-chromen-3-yl 4-methoxybenzenesulfonate (C23H18O7S) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-(4-Methoxyphenyl)-4-oxo-4H-chromen-3-yl 4-methoxybenzenesulfonate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C23H18O7S |
| Molecular Weight | 438.45 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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 |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Sulfur Atoms | 1 |
Related Methoxyphenyl Standards
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- 1-(4-Methoxyphenyl)-2-phenyl-4-(phenylthio)-6,7-dihydro-1H-indole-5-carbaldehyde (CAS 477887-81-3)
- N-(3-Methoxyphenyl)-2-({3-methyl-4-oxo-7-phenyl-3H,4H-thieno[3,2-d]pyrimidin-2-yl}sulfanyl)acetamide (CAS 1111292-26-2)
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Recommended Standards
- Candesartan Cilexetil Impurity 46 (CAS 1821386-35-9)
- 2,7-Dimethoxy-9-((4-nitrobenzyl)sulfonyl)acridine (CAS 827303-18-4)
- N1,N3,N5-Tri(pyridin-4-yl)benzene-1,3,5-tricarboxamide (CAS 725274-03-3)
- 4-(2,4-Difluorophenoxy)-5-(4-methylbenzenesulfonyl)-2-phenylpyrimidine (CAS 478247-31-3)
- 8-Bromo-3-methoxyquinolin-2(1H)-one (CAS 1434103-24-8)
- tert-Butyl (2S,4R)-4-amino-2-(difluoromethyl)pyrrolidine-1-carboxylate (CAS 1207852-96-7)
- methyl 2-methyl-2-[(2-methylpropyl)amino]propanoate (CAS 1157810-14-4)
- (1-Methylpiperidin-2-yl)methanamine dioxalate (CAS 1609401-26-4)
- 3-Formylindole-5-boronic Acid Pinacol Ester (CAS 1204742-74-4)
- Methyl 2-chlorocyclopent-1-ene-1-carboxylate (CAS 66839-38-1)
- Agomelatine Impurity 38 (CAS 22009-38-7)
- 2,4,5-Trimethylphenol (CAS 496-78-6)
- 8-Bromo-4-hydroxy-3-nitroquinolin-2(1H)-one (CAS 54675-49-9)
- Semaglutide impurity 261 (CAS CATO-C4X-2226261)
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