2-(3-Methylisoxazol-5-yl)benzoic Acid CAS 80238-83-1
| CAS No. | 80238-83-1 |
| Molecular Formula | C11H9NO3 |
| Molecular Weight | 203.19 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.
2-(3-Methylisoxazol-5-yl)benzoic Acid (CAS 80238-83-1), molecular formula C11H9NO3 and molecular weight 203.19 g/mol, is a CATO reference standard with documented purity and traceability.
2-(3-Methylisoxazol-5-yl)benzoic Acid (C11H9NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), 2-(3-Methylisoxazol-5-yl)benzoic Acid 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 | C11H9NO3 |
| Molecular Weight | 203.19 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.) | 1979 |
| Nitrogen Atoms | 1 |
Related Methylisoxazol Standards
- 3-(5-Methylisoxazol-3-yl)benzoic acid (CAS 1231243-97-2)
- 4-(5-Methylisoxazol-3-yl)benzoic acid (CAS 1231244-44-2)
- 4-((5-Methylisoxazol-3-yl)oxy)benzaldehyde (CAS 1260599-37-8)
- 3-(3-Methylisoxazol-5-yl)benzoic acid (CAS 628297-38-1)
- 4-(3-Ethyl-4-methylisoxazol-5-yl)aniline (CAS 174152-43-3)
- 2-(3-Methylisoxazol-5-yl)-1-(pyridin-2-yl)ethanone (CAS 102116-94-9)
- N-(3-Methylisoxazol-4-yl)benzamide (CAS 108512-07-8)
- N-(5-Methylisoxazol-3-yl)benzamide (CAS 13053-85-5)
Recommended Standards
- 2-(3-Methoxyphenyl)oxazole-4-carbaldehyde (CAS 885272-93-5)
- 2-(3-Phenylisoxazol-5-yl)acetic acid (CAS 3919-84-4)
- 2-(3,5-dimethylpyridinium-1-yl)-3,4-dioxocyclobut-1-en-1-olate (CAS 92089-52-6)
- 2-(4-Formyl-1H-indol-1-yl)acetic acid (CAS 219685-09-3)
- 6-Boc-2,6-Diazaspiro[4.4]nonan-1-one (CAS 1221818-45-6)
- 5-Amino-5-hydroxy-7-methyl-1H-benzo[d]imidazol-4(5H)-one (CAS 536757-13-8)
- 4,6-Dichloro-7-methoxyquinazoline (CAS 205584-69-6)
- 1,1'-(2,5-Dimethyl-1-(p-tolyl)-1H-pyrrole-3,4-diyl)diethanone (CAS 112086-81-4)
- 2-[4-(2-methyl-piperidine-1-sulfonyl)-phenyl]-ethylamine hydrochloride (CAS 1158551-79-1)
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