3-[[(4-Methylphenyl)sulfonyl]oxy]-4-(phenylmethoxy)benzaldehyde 4-(Benzyloxy)-3-hydroxybenzaldehyde p-Toluenesulfonate 65615-20-5 CAS 65615-20-5
| CAS No. | 65615-20-5 |
| Molecular Formula | C21H18O5S |
| Molecular Weight | 382.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-[[(4-Methylphenyl)sulfonyl]oxy]-4-(phenylmethoxy)benzaldehyde 4-(Benzyloxy)-3-hydroxybenzaldehyde p-Toluenesulfonate 65615-20-5 (CAS 65615-20-5), molecular formula C21H18O5S and molecular weight 382.43 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-[[(4-Methylphenyl)sulfonyl]oxy]-4-(phenylmethoxy)benzaldehyde 4-(Benzyloxy)-3-hydroxybenzaldehyde p-Toluenesulfonate 65615-20-5 (C21H18O5S) is characterized by a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C21H18O5S |
| Molecular Weight | 382.43 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Sulfur Atoms | 1 |
Related Methylphenyl Standards
- 363179-62-8 N'-(4-methylphenyl)sulfonyl-2-phenoxybenzohydrazide DTXSID50375119 (CAS 363179-62-8)
- 1-(4-Methylphenyl)-4-{2-[(3-methylphenyl)methoxy]benzoyl}-1H-pyrazole (CAS 955966-94-6)
- 2-[(5-{[(4-Methylphenyl)amino]methyl}-4-phenyl-4H-1,2,4-triazol-3-yl)thio]propanohydrazide (CAS 1306738-81-7)
- 4-[(4-Methylphenyl)methyl]-3-[1-(thiophene-3-carbonyl)piperidin-4-yl]-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 1775365-84-8)
- 4-[(4-Methylphenyl)methyl]-3-[1-(thiophene-2-carbonyl)piperidin-4-yl]-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 1775505-28-6)
- 6-[(E)-2-(4-Methylphenyl)ethenyl]-4-[(Z)-2-(4-methylphenyl)ethenyl]-2-(methylsulfanyl)pyridine-3-carbonitrile (CAS 303985-25-3)
- 3-benzyl-6-(4-methylphenyl)-2-sulfanyl-3H,4H-thieno[3,2-d]pyrimidin-4-one (CAS 438030-47-8)
- 1-[(4-Methylphenyl)sulfonyl]azetidin-3-yl 4-methylbenzenesulfonate (CAS 17358-66-6)
Recommended Standards
- Topiramate Impurity 29 (CAS 53209-14-6)
- n-(4-(n-(4-Phenoxyphenyl)sulfamoyl)phenyl)acetamide (CAS 315248-48-7)
- Topiramate Impurity 31 (CAS CATO-C4X-176831)
- N-(1,2-Dihydronaphtho[2,1-b]furan-2-ylcarbonyl)-4-methylbenzenesulfonohydrazide (CAS 478064-25-4)
- 3-Fluoro-5-(pentafluorosulfur)benzoyl chloride (CAS 1240256-92-1)
- 4-(6-Bromobenzo[d][1,3]dioxol-5-yl)-N-(2-methoxyphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxamide (CAS 494196-69-9)
- 1,1'-Bis(2-ethoxy-2-oxoethyl)-[4,4'-bipyridine]-1,1'-diium bromide (CAS 75539-74-1)
- 3-Pyridazinamine, 4-bromo-6-chloro-5-methyl- (CAS 933034-94-7)
- 2-amino-3,4,4-trifluorobut-3-enoic acid (CAS 775248-58-3)
- (E)-7-(2,4-dichlorostyryl)-2-methylpyrazolo[1,5-a]pyrimidine (CAS 692737-05-6)
- 3-Methyl-N-(4-morpholinophenyl)butanamide (CAS 250714-74-0)
- 2-Amino-N-((2,3-dihydrobenzo[b][1,4]dioxin-5-yl)methyl)-N-isopropylacetamide (CAS 1353959-22-4)
- N-methoxy-N,1-dimethylcyclopropane-1-carboxamide (CAS 608537-49-1)
- Semaglutide impurity 94 (CAS CATO-C4X-222694)
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