4-((4-Methoxyphenoxy)methyl)-5-methylisoxazole-3-carboxylic acid CAS 932918-29-1
| CAS No. | 932918-29-1 |
| Molecular Formula | C13H13NO5 |
| Molecular Weight | 263.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 4-((4-Methoxyphenoxy)methyl)-5-methylisoxazole-3-carboxylic acid (C13H13NO5) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 263.25 g/mol, it falls into the medium-molecular-weight range. 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).
4-((4-Methoxyphenoxy)methyl)-5-methylisoxazole-3-carboxylic acid (CAS 932918-29-1), molecular formula C13H13NO5 and molecular weight 263.25 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C13H13NO5 |
| Molecular Weight | 263.25 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 |
Related Methoxyphenoxy Standards
- 4-((3-Methoxyphenoxy)methyl)-5-methylisoxazole-3-carboxylic acid (CAS 905808-61-9)
- 4-[(2-Methoxyphenoxy)methyl]-5-methylisoxazole-3-carboxylic acid (CAS 932894-19-4)
- N-[2-(4-Methoxyphenoxy)ethyl]-N-(2-thienylmethyl)amine (CAS 1040687-07-7)
- Methyl 1-((4-methoxyphenoxy)methyl)-1h-pyrazole-3-carboxylate (CAS 1002243-85-7)
- 1-((4-Methoxyphenoxy)methyl)-1h-pyrazole-3-carbohydrazide (CAS 1005624-68-9)
- 5-((2-Methoxyphenoxy)methyl)-3-methylfuran-2-carboxylic acid (CAS 303064-38-2)
- 5-((2-Methoxyphenoxy)methyl)furan-2-carbohydrazide (CAS 364625-21-8)
- 5-((4-Methoxyphenoxy)methyl)furan-2-carbohydrazide (CAS 832740-28-0)
Recommended Standards
- 4-((Dimethylamino)methyl)-3-(4-nitrophenyl)isoxazol-5(2H)-one (CAS 61195-00-4)
- 4-((1,3-Dioxolan-2-yl)methyl)-6-methoxypyrido[3,2-b]pyrazin-3(4H)-one (CAS 959615-76-0)
- 4-(1-Methyl-5-nitro-1H-benzo[d]imidazol-2-yl)butanoic Acid (CAS 31349-48-1)
- 3-Formyl-5,6-dimethoxy-1-methyl-1h-indole-2-carboxylic acid (CAS 893732-31-5)
- 3-(Propane-1-sulfonamido)benzoic acid (CAS 849409-82-1)
- 4-Bromo-3-(difluoromethyl)-6-fluoro-2-methoxypyridine (CAS 1806063-78-4)
- 2-[(2R)-2-aminopropoxy]-1,3-difluorobenzene hydrochloride (CAS 1955474-81-3)
- 1-(Difluoromethyl)-4-methyl-1H-indole (CAS 1602204-87-4)
- Z-Leu-Val-Gly-diazomethylketone (CAS 119670-30-3)
- (3-Bromo-5-nitrophenyl)boronic acid (CAS 380430-48-8)
- Methyl 6-chloro-3-fluoro-2-methylbenzoate (CAS 1376760-13-2)
- Methyl 2-hydroxy-3-(1-oxidothiomorpholino)propanoate (CAS 1864891-64-4)
- 6-Chloro-5-fluoro-4-iodopyridin-3-amine (CAS 1312755-62-6)
- Fragment-[3-31]-Semaglutide (CAS CATO-C4X-2226113)
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