3-[Hydroxy(phenyl)methyl]isoxazole-4-carboxylic Acid CAS 2006277-34-3
| CAS No. | 2006277-34-3 |
| Molecular Formula | C11H9NO4 |
| Molecular Weight | 219.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 3-[Hydroxy(phenyl)methyl]isoxazole-4-carboxylic Acid (CAS 2006277-34-3), a certified reference material (molecular formula C11H9NO4, MW 219.19 g/mol) for analytical method development and quality control.
The molecular framework of 3-[Hydroxy(phenyl)methyl]isoxazole-4-carboxylic Acid (C11H9NO4) is characterized by an amino-acid-derived structure, an amide 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H9NO4 |
| Molecular Weight | 219.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- tert-Butyl 3-(fluoromethyl)piperazine-1-carboxylate (CAS 1240595-05-4)
- tert-Butyl 3-benzyl-3,6-diazabicyclo[3.1.1]heptane-6-carboxylate (CAS 869494-15-5)
- 7-Ethoxy-4-methyl-N-(4,4,6-trimethyl-1,4-dihydropyrimidin-2-yl)quinazolin-2-amine (CAS 309731-36-0)
- Nopol (CAS 128-50-7)
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- 2-Hydroxy-3-(1-methyl-1h-indazol-3-yl)propanoic acid (CAS 1486986-61-1)
- Semaglutide impurity 55 (CAS CATO-C4X-222655)
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