5-methyl-4-(phenoxymethyl)isoxazole-3-carboxylic acid CAS 905809-10-1
| CAS No. | 905809-10-1 |
| Molecular Formula | C12H11NO4 |
| Molecular Weight | 233.22 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.
5-methyl-4-(phenoxymethyl)isoxazole-3-carboxylic acid (CAS 905809-10-1) is a high-purity analytical reference standard with the molecular formula C12H11NO4 and a molecular weight of 233.22 g/mol.
5-methyl-4-(phenoxymethyl)isoxazole-3-carboxylic acid (C12H11NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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).
As a certified reference material (CRM), 5-methyl-4-(phenoxymethyl)isoxazole-3-carboxylic 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 | C12H11NO4 |
| Molecular Weight | 233.22 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, 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related methyl Standards
- 2-(5-(Phenoxymethyl)-1H-1,2,4-triazol-3-yl)acetic acid (CAS 1216294-22-2)
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- Methyl 1-(phenoxymethyl)-1h-pyrazole-3-carboxylate (CAS 1003988-74-6)
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Recommended Standards
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- 6,7-Dimethoxyquinoline-3-carboxylic Acid (CAS 5278-40-0)
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- TAPI 2 (CAS 689284-12-6)
- 1-(6-(Hydroxymethyl)-5-methylpyrazin-2-yl)ethane-1,2-diol (CAS 130443-94-6)
- (5,6-Dihydro-4H-[1,3]thiazin-2-yl)-(2-isopropyl-phenyl)-amine (CAS 102389-18-4)
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