(4R,5S)-Methyl 4-amino-3-oxoisoxazolidine-5-carboxylate CAS 112458-08-9
| CAS No. | 112458-08-9 |
| Molecular Formula | C5H8N2O4 |
| Molecular Weight | 160.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H8N2O4, (4R,5S)-Methyl 4-amino-3-oxoisoxazolidine-5-carboxylate contains a carbohydrate-derived structure, an amide group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 160.13 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.
(4R,5S)-Methyl 4-amino-3-oxoisoxazolidine-5-carboxylate (CAS 112458-08-9), molecular formula C5H8N2O4 and molecular weight 160.13 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 | C5H8N2O4 |
| Molecular Weight | 160.13 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 2 |
Recommended Standards
- (4S,5S)-Methyl 4-amino-3-oxoisoxazolidine-5-carboxylate (CAS 112244-07-2)
- 2-hydroxybenzo[d]oxazole-4-carbonitrile (CAS 1126633-73-5)
- 1H-Isoxazolo[3,4-d]pyrazolo[3,4-b]pyridine (CAS 107457-74-9)
- 1,3-Phenylene Dicyanate (CAS 1129-88-0)
- Flumethasone Acetate (CAS 2823-42-9)
- D-Calcium Pantothenate (CAS 137-08-6)
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