| CAS No. | 66620-06-2 |
| Molecular Formula | C4H7N3O3 |
| Molecular Weight | 145.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 145.12 g/mol gives (4R,5S)-4-Amino-3-oxoisoxazolidine-5-carboxamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(4R,5S)-4-Amino-3-oxoisoxazolidine-5-carboxamide (CAS 66620-06-2), molecular formula C4H7N3O3 and molecular weight 145.12 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (4R,5S)-4-Amino-3-oxoisoxazolidine-5-carboxamide (C4H7N3O3) 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. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures (4R,5S)-4-Amino-3-oxoisoxazolidine-5-carboxamide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
| Molecular Formula | C4H7N3O3 |
| Molecular Weight | 145.12 g/mol |
| 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.) | 1976 |
| Nitrogen Atoms | 3 |