5-(tert-Butyl)-3-methoxy-4-methylisoxazole CAS 95406-70-5
| CAS No. | 95406-70-5 |
| Molecular Formula | C9H15NO2 |
| Molecular Weight | 169.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 169.22 g/mol gives 5-(tert-Butyl)-3-methoxy-4-methylisoxazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-(tert-Butyl)-3-methoxy-4-methylisoxazole (CAS 95406-70-5), a certified reference material (molecular formula C9H15NO2, MW 169.22 g/mol) for analytical method development and quality control.
Based on its molecular formula C9H15NO2, 5-(tert-Butyl)-3-methoxy-4-methylisoxazole contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 169.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C9H15NO2 |
| Molecular Weight | 169.22 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 1 |
Recommended Standards
- 5-(Butoxymethyl)-3-methylisoxazole (CAS 96603-78-0)
- 5-Amino-1-(pentan-3-yl)-1,2-dihydro-3H-pyrazol-3-one (CAS 727675-81-2)
- 4-Methyl-3-(pyrrolidin-1-yl)dihydrofuran-2(3H)-one (CAS 374673-78-6)
- 5-Azaspiro[3.5]Nonane-8-carboxylic acid (CAS 2309448-36-8)
- 3-Iodo-2-methyl-2H-indazole (CAS 49572-64-7)
- 4-(Iodomethyl)tetrahydro-2H-pyran-2-one (CAS 129352-62-1)
- Ethyl 2-(2-methyl-1-oxo-6-(((trifluoromethyl)sulfonyl)oxy)-1,2,3,4-tetrahydronaphthalen-2-yl)acetate (CAS 1414797-86-6)
- 2-(3-Ethylphenyl)-1H-pyrazolo[3,4-b]pyridin-3(2H)-one (CAS 1189423-81-1)
- 3-Bromo-5-cyclohexyl-4,5-dihydroisoxazole (CAS 1120214-99-4)
- Benzenesulfonamide, N-[(4-chlorophenyl)methylene]-4-methyl-, [N(E)]- (CAS 357417-22-2)
- N-(2-oxo-2-(piperidin-1-yl)ethyl)benzamide (CAS 51769-86-9)
- Donepezil Impurity 61 (CAS 937362-16-8)
- 2516-34-9 Cyclobutanamine Cyclobutylamine Aminocyclobutane EINECS 219-736-0 (CAS 2516-34-9)
- Neuropeptide Y (2-36), amide, porcine (CAS 102961-52-4)
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