4-Isopropyl-3-methyl-5(2H)-isoxazolone CAS 29879-46-7
| CAS No. | 29879-46-7 |
| Molecular Formula | C7H11NO2 |
| Molecular Weight | 141.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 4-Isopropyl-3-methyl-5(2H)-isoxazolone (CAS 29879-46-7), a certified reference material (molecular formula C7H11NO2, MW 141.17 g/mol) for analytical method development and quality control.
4-Isopropyl-3-methyl-5(2H)-isoxazolone (C7H11NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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).
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 | C7H11NO2 |
| Molecular Weight | 141.17 g/mol |
| 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.) | 1965 |
| Nitrogen Atoms | 1 |
Related Isopropyl Standards
- N3-Isopropyl-4H-1,2,4-triazole-3,5-diamine (CAS 106580-60-3)
- (1-Isopropyl-1H-tetrazol-5-yl)methanamine (CAS 1092290-88-4)
- 3-Isopropyl-N-methyl-1,2,4-oxadiazol-5-amine (CAS 1248931-16-9)
- (4-isopropyl-4H-1,2,4-triazol-3-yl)methanol (CAS 1370592-68-9)
- (3-Isopropyl-1,2,4-oxadiazol-5-yl)methanamine (CAS 936940-67-9)
- (5-Isopropyl-1,2,4-oxadiazol-3-yl)methanamine (CAS 936940-30-6)
- 4-Isopropyl-5-methylisoxazol-3(2H)-one (CAS 29068-34-6)
- 5-Isopropyl-4H-1,2,4-triazole-3,4-diamine (CAS 88512-67-8)
Recommended Standards
- 4H,5H-pyrazolo[1,5-a]pyrimidin-5-one (CAS 29274-22-4)
- 4-Ethynylphenylacetonitrile (CAS 351002-90-9)
- 4-methoxypyrimidine-2-carbonitrile (CAS 94789-37-4)
- 4-Ethylpiperidine-2,6-dione (CAS 78265-96-0)
- 3-Amino-1H-pyrazole-4-carboxaldehyde (CAS 2284110-65-0)
- (2,5-Dimethyl-4-(trimethylsilyl)phenyl)boronic acid (CAS 1059575-28-8)
- 2-(Methylsulfanyl)-1,3-thiazole-5-carboxylic acid (CAS 635283-90-8)
- 2-(4-(Methylsulfonyl)phenyl)-2-oxoacetic acid (CAS 79478-01-6)
- Perospirone Impurity 22 (CAS CATO-C4X-245822)
- 2,3-Dichloro-5,6-difluorobenzenesulfonyl chloride (CAS 1263377-79-2)
- 2-((2-Methoxybenzyl)thio)benzo[d]thiazole (CAS 401577-91-1)
- 6-Aminoquinolyl-N-hydroxysuccinimidyl Carbamate (CAS 148757-94-2)
- Suzetrigine Impurity 56 (CAS CATO-C4X-336956)
- Tirzepatide Impurity 1 (CAS 2460751-66-8)
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