| CAS No. | 66619-96-3 |
| Molecular Formula | C4H7N3O4 |
| Molecular Weight | 161.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
The occurrence of 4-Amino-N-hydroxy-3-oxoisoxazolidine-5-carboxamide is closely related to a carbohydrate-derived structure, an amide group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-Amino-N-hydroxy-3-oxoisoxazolidine-5-carboxamide (CAS 66619-96-3), a certified reference material (molecular formula C4H7N3O4, MW 161.12 g/mol) for analytical method development and quality control.
The molecular framework of 4-Amino-N-hydroxy-3-oxoisoxazolidine-5-carboxamide (C4H7N3O4) is characterized by a carbohydrate-derived structure, an amide group. 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).
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.
As a certified reference material (CRM), 4-Amino-N-hydroxy-3-oxoisoxazolidine-5-carboxamide meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
| Molecular Formula | C4H7N3O4 |
| Molecular Weight | 161.12 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.) | 1976 |
| Nitrogen Atoms | 3 |