5-(3-Methoxyphenyl)isoxazole-3-carbonyl chloride CAS 88958-31-0
| CAS No. | 88958-31-0 |
| Molecular Formula | C11H8ClNO3 |
| Molecular Weight | 237.64 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.
CATO supplies 5-(3-Methoxyphenyl)isoxazole-3-carbonyl chloride (CAS 88958-31-0), a certified reference material (molecular formula C11H8ClNO3, MW 237.64 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H8ClNO3, 5-(3-Methoxyphenyl)isoxazole-3-carbonyl chloride contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 237.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C11H8ClNO3 |
| Molecular Weight | 237.64 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Methoxyphenyl Standards
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Recommended Standards
- 5-(3-Chloropyridin-2-yl)-1-methyl-1H-pyrazole-4-carboxylic acid (CAS 2168146-16-3)
- 5-(4-Chlorophenyl)-3-methylisoxazole-4-carboxylic acid (CAS 91182-89-7)
- 5-(3-Chlorophenyl)-3-methylisoxazole-4-carboxylic acid (CAS 92545-96-5)
- 4-Chloro-7-methoxyquinoline-3-carboxylic Acid (CAS 852062-08-9)
- 2-(3-Nitrophenyl)furan (CAS 28988-01-4)
- 1-(3,4-Dihydropyrrolo[1,2-a]pyrazin-2(1H)-yl)ethanone (CAS 165117-99-7)
- 4-Allyl-5-cyclopropyl-4H-1,2,4-triazole-3-thiol (CAS 443917-88-2)
- N-(4-methoxyphenyl)-1,3-thiazolidine-4-carboxamide hydrochloride (CAS 1251923-09-7)
- 2-Hydrazinylpyrimidine-4,6(1H,5H)-dione (CAS 42039-74-7)
- 3-Iodo-N-isopropylaniline (CAS 1152562-39-4)
- [(4-Methylphenyl)methoxy]urea (CAS 338756-47-1)
- [4-(methoxymethyl)phenyl]methanesulfonamide (CAS 1481206-18-1)
- tert-Butyl (6-azaspiro[3.4]octan-1-yl)carbamate hydrochloride (CAS 1946021-32-4)
- D-Ser39-Tirzepatide (CAS CATO-CPTD788679)
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