2-(Naphthalen-2-ylsulfonyl)-3-phenylisoxazol-5(2H)-one CAS 303987-08-8
| CAS No. | 303987-08-8 |
| Molecular Formula | C19H13NO4S |
| Molecular Weight | 351.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(Naphthalen-2-ylsulfonyl)-3-phenylisoxazol-5(2H)-one (C19H13NO4S) contains a flavonoid core, an amide group, 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).
CATO supplies 2-(Naphthalen-2-ylsulfonyl)-3-phenylisoxazol-5(2H)-one (CAS 303987-08-8), a certified reference material (molecular formula C19H13NO4S, MW 351.38 g/mol) for analytical method development and quality control.
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.
As a certified reference material (CRM), 2-(Naphthalen-2-ylsulfonyl)-3-phenylisoxazol-5(2H)-one 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 | C19H13NO4S |
| Molecular Weight | 351.38 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Naphthalen Standards
- 2-(2-(Naphthalen-1-yloxy)acetyl)-N-phenylhydrazine-1-carbothioamide (CAS 370563-15-8)
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Recommended Standards
- 2-((5-Cyano-[2,3'-bipyridin]-6-yl)thio)-N-(5-methylisoxazol-3(2H)-ylidene)acetamide (CAS 488733-15-9)
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- 2-((1,1-Dioxidotetrahydrothiophen-3-yl)(methyl)amino)-2-oxoethyl 1H-indazole-3-carboxylate (CAS 745070-17-1)
- 2-Amino-6-(naphthalen-2-ylsulfonyl)quinazolin-4(1H)-one (CAS 52979-11-0)
- 2,6-Dichloro-5-fluoropyrimidin-4-amine (CAS 2230713-73-0)
- (4-ethoxypyrrolidin-3-yl)methanol (CAS 1955540-22-3)
- 2-{[5-(4-fluorophenyl)-1,3,4-oxadiazol-2-yl]sulfanyl}acetic acid (CAS 485334-65-4)
- 1,3-Dimercaptopropan-2-ol (CAS 584-04-3)
- 1-(2-Morpholinoethyl)-1H-pyrazol-5-amine (CAS 2054953-89-6)
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