Benzo[d]isoxazol-3-yl 4-methylbenzenesulfonate CAS 540750-50-3
| CAS No. | 540750-50-3 |
| Molecular Formula | C14H11NO4S |
| Molecular Weight | 289.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Benzo[d]isoxazol-3-yl 4-methylbenzenesulfonate is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Benzo[d]isoxazol-3-yl 4-methylbenzenesulfonate (CAS 540750-50-3), a certified reference material (molecular formula C14H11NO4S, MW 289.31 g/mol) for analytical method development and quality control.
The molecular framework of Benzo[d]isoxazol-3-yl 4-methylbenzenesulfonate (C14H11NO4S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), Benzo[d]isoxazol-3-yl 4-methylbenzenesulfonate 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 | C14H11NO4S |
| Molecular Weight | 289.31 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Benzo Standards
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- 2-(Benzo[d]oxazol-2-ylthio)-N-(5-methylisoxazol-3-yl)acetamide (CAS 309274-50-8)
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Recommended Standards
- Methyl 2-((2-oxo-2,3-dihydroimidazo[1,2-c]quinazolin-5-yl)thio)acetate (CAS 478039-20-2)
- 9-Tosyl-9H-purin-6-amine (CAS 30955-07-8)
- 8-Hydroxy-3-methylbenzo[f]quinoline-5-sulfonic acid (CAS 854048-08-1)
- Methyl 3-nitro-4-(phenylthio)benzoate (CAS 33358-30-4)
- 8-hydroxy-decahydroquinoline-7-carboxylic acid (CAS 1820615-81-3)
- 2,6-Dichloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzenamine (CAS 1371630-51-1)
- N-(5-methyl-1,3-thiazolidin-2-ylidene)pyridin-3-amine dihydrochloride (CAS 1252559-53-7)
- 3-(4-(3-((tert-Butyldiphenylsilyl)oxy)propyl)phenyl)-4-nitropyridine (CAS 2267291-19-8)
- 3-Chloro-N-[2-(3,5-dimethylphenoxy)ethyl]-4-methoxyaniline (CAS 1040685-49-1)
- Ethyl 4-(4-benzyl-2-oxooxazolidin-3-yl)-4-oxobut-2-enoate (CAS 128217-49-2)
- tert-Butyl 2-((2R,4R)-4-hydroxypiperidin-2-yl)acetate (CAS 2667654-54-6)
- Tetrahydrofuran-2-carboximidamide hydrochloride (CAS 619329-27-0)
- 474659-26-2 7-Methoxyquinoline-3-carboxylic acid MFCD09787873 3-Carboxy-7-methoxyquinoline (CAS 474659-26-2)
- Semaglutide impurity 46 (CAS CATO-C4X-222646)
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