3-Hydroxy-5-ethylisoxazole CAS 10004-45-2
| CAS No. | 10004-45-2 |
| Molecular Formula | C5H7NO2 |
| Molecular Weight | 113.11 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.
3-Hydroxy-5-ethylisoxazole (CAS 10004-45-2) is a high-purity analytical reference standard with the molecular formula C5H7NO2 and a molecular weight of 113.11 g/mol.
The molecular framework of 3-Hydroxy-5-ethylisoxazole (C5H7NO2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H7NO2 |
| Molecular Weight | 113.11 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.) | 1959 |
| Nitrogen Atoms | 1 |
Related Hydroxy Standards
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Recommended Standards
- 287484-45-1 6-Amino(~15~N_2_)pyrimidin-2(1H)-one DTXSID00736170 (CAS 287484-45-1)
- (5-Methylisoxazol-4-yl)methanol (CAS 100367-49-5)
- Uracil-6-d1 (CAS 24897-51-6)
- (3-Methylisoxazol-4-yl)methanol (CAS 100367-83-7)
- (3-Chlorophenyl)(4-(methylthio)phenyl)methanol (CAS 844683-58-5)
- 1-(Methoxyacetyl)-1,2,3,4-tetrahydroquinolin-7-amine (CAS 1171346-38-5)
- 3-Chloro-5-fluoro-4-methoxybenzaldehyde (CAS 177994-49-9)
- tert-Butyldiisopropylphosphine (CAS 51567-05-6)
- Dihydrocornin (CAS 51847-91-7)
- (6-((Methylamino)methyl)pyridin-2-yl)methanol (CAS 139909-46-9)
- 1-(4-Bromophenyl)-3-(2,4-dimethylphenyl)propan-1-one (CAS 898793-87-8)
- Pranoprofen Impurity 32 (CAS CATO-C4X-181132)
- Terrestrosin D (CAS 179464-23-4)
- Semaglutide impurity 108 (CAS CATO-C4X-2226108)
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