1-(3-Ethyl-4-methylisoxazol-5-yl)ethanone CAS 61858-84-2
| CAS No. | 61858-84-2 |
| Molecular Formula | C8H11NO2 |
| Molecular Weight | 153.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-(3-Ethyl-4-methylisoxazol-5-yl)ethanone (CAS 61858-84-2) is a high-purity analytical reference standard with the molecular formula C8H11NO2 and a molecular weight of 153.18 g/mol.
1-(3-Ethyl-4-methylisoxazol-5-yl)ethanone (C8H11NO2) 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).
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.
Physical & Chemical Properties
| Molecular Formula | C8H11NO2 |
| Molecular Weight | 153.18 g/mol |
| Appearance | Off-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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- 2-Methyl-3-(3-methylisoxazol-5-yl)prop-2-en-1-ol (CAS 109203-40-9)
- 1-(3-Methylisoxazol-5-yl)butan-1-one (CAS 114402-52-7)
- (1-(5-Methylisoxazol-3-yl)cyclopropyl)methanol (CAS 1352511-31-9)
- (S)-1-(3-Methylisoxazol-5-yl)but-3-en-1-ol (CAS 215360-95-5)
- 1-(3-Methylisoxazol-4-yl)butan-1-one (CAS 207913-24-4)
- (E)-3-(5-Methylisoxazol-3-yl)acrylic acid (CAS 1065478-29-6)
- 3-(3-Methylisoxazol-5-yl)acrylic acid (CAS 71810-76-9)
- 3-(5-Methylisoxazol-3-yl)acrylic acid (CAS 71810-79-2)
Recommended Standards
- 1-(3-Cyclopropylisoxazol-5-yl)ethanol (CAS 301168-24-1)
- 1-(3-ethyl-5-methyl-1,2-oxazol-4-yl)ethan-1-one (CAS 79379-86-5)
- 1-(3-Aminopropyl)pyrimidin-2(1h)-one (CAS 953908-62-8)
- 1-(3-Hydroxypropyl)-1,2-dihydropyridin-2-one (CAS 25514-24-3)
- Maltoheptaose xhydrate (CAS 207511-07-7)
- N-(1-phenylbutyl)hydroxylamine (CAS 59336-66-2)
- 11-(Thiazol-2-yl)-8-oxa-3,11-diazaspiro[5.6]dodecane (CAS 1422133-89-8)
- 1174044-75-7 4-(Tetrahydro-2-furanylmethoxy)piperidine hydrochloride 9955AC C10H20ClNO2 (CAS 1174044-75-7)
- (S)-1-(3,5-difluorophenyl)pentan-1-amine (CAS 1213910-82-7)
- tert-Butyl 4-(2-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenylsulfonyl)piperazine-1-carboxylate (CAS 1628016-45-4)
- Methyl (3r)-4-amino-3-{[(benzyloxy)carbonyl]amino}butanoate hydrochloride (CAS 845909-53-7)
- H-Arg-Ile-OH (CAS 62632-70-6)
- Furosemide Impurity 29 (CAS 4795-29-3)
- Semaglutide impurity 96 (CAS CATO-C4X-222696)
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