5-Methyl-4-((m-tolyloxy)methyl)isoxazole-3-carboxylic acid CAS 905809-11-2
| CAS No. | 905809-11-2 |
| Molecular Formula | C13H13NO4 |
| Molecular Weight | 247.25 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-((m-tolyloxy)methyl)isoxazole-3-carboxylic acid (CAS 905809-11-2), molecular formula C13H13NO4 and molecular weight 247.25 g/mol, is a CATO reference standard with documented purity and traceability.
5-Methyl-4-((m-tolyloxy)methyl)isoxazole-3-carboxylic acid (C13H13NO4) contains a nitrogen-containing heterocyclic scaffold, 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 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).
CATO manufactures 5-Methyl-4-((m-tolyloxy)methyl)isoxazole-3-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H13NO4 |
| Molecular Weight | 247.25 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 |
Recommended Standards
- 5-Amino-1-(4-ethoxyphenyl)-1h-1,2,3-triazole-4-carboxamide (CAS 929826-74-4)
- 5-Methyl-4-(2-methylphenoxymethyl)-1,2-oxazole-3-carboxylic acid (CAS 905808-63-1)
- 5-[(4-Methoxyanilino)methyl]-2-furoic acid (CAS 842965-40-6)
- 5-Methyl-4-[(4-methylphenoxy)methyl]isoxazole-3-carboxylic acid (CAS 910442-86-3)
- (3-Amino-1-benzofuran-2-yl)-(4-fluorophenyl)methanone 128170-38-7 3478AD C15H10FNO2 (CAS 128170-38-7)
- (3Z)-2-{[(3-methylphenyl)methyl]sulfanyl}-3-{2-[3-(trifluoromethyl)phenyl]hydrazin-1-ylidene}-3H-indole (CAS 478044-96-1)
- 2-Chloro-6-nitrobenzoyl chloride (CAS 50425-14-4)
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- 5-(Methylsulfonyl)-2-phenyl-1H-benzo[d]imidazole (CAS 1255098-90-8)
- Des-Gly34-Tirzepatide (CAS CATO-CPTD788940)
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