5-Amino-3-methylisoxazole-4-carboxylic Acid CAS 84661-50-7
| CAS No. | 84661-50-7 |
| Molecular Formula | C5H6N2O3 |
| Molecular Weight | 142.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5-Amino-3-methylisoxazole-4-carboxylic Acid is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 142.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
5-Amino-3-methylisoxazole-4-carboxylic Acid (CAS 84661-50-7), molecular formula C5H6N2O3 and molecular weight 142.11 g/mol, is a CATO reference standard with documented purity and traceability.
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), 5-Amino-3-methylisoxazole-4-carboxylic Acid 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.
Physical & Chemical Properties
| Molecular Formula | C5H6N2O3 |
| Molecular Weight | 142.11 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1981 |
| Nitrogen Atoms | 2 |
Related Amino Standards
- Methyl 2-amino-1,3-oxazole-4-carboxylate (CAS 1000576-38-4)
- 2-amino-5-methyloxazole-4-carboxylic acid (CAS 1240596-17-1)
- 3-Amino-5-methylisoxazole-4-carboxylic acid (CAS 89322-88-3)
- 4-Amino-3-methylisoxazole-5-carboxylic acid (CAS 83988-31-2)
- 5-Amino-3-oxo-2,3-dihydro-1H-pyrazole-1-carboxamide (CAS 119768-91-1)
- 3-Amino-5-hydroxy-1H-pyrazole-1-carboxamide (CAS 119769-05-0)
- 2-(5-Amino-1h-1,2,4-triazol-1-yl)acetic acid (CAS 1341722-85-7)
- 2-(4-Amino-2h-1,2,3-triazol-2-yl)acetic acid (CAS 1368124-71-3)
Recommended Standards
- 5,6-Dihydroxy-2-methylpyrimidin-4(1H)-one (CAS 98021-25-1)
- 5-Ethyl-1,3,4-oxadiazole-2-carboxylic acid (CAS 944898-04-8)
- 4-Methyl-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid (CAS 343929-13-5)
- 5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid, 97% (CAS 58364-97-9)
- 5-Methyl-4-nitroisoxazole (CAS 1122-06-1)
- 1-Bromo-2-methoxy-3,5-dimethylbenzene (CAS 65492-45-7)
- N3SHC5273S 7791-11-9 Rubidium chloride Rubidium-chloride Rubidium chloride (RbCl) EINECS 232-240-9 NSC 84273 Rubidium monochloride UNII-N3SHC5273S (CAS 7791-11-9)
- 2-(4-Chlorobenzyl)thiazole-4-carboxylic acid (CAS 477872-93-8)
- N-(3,4-Dichlorophenyl)-5-methylisoxazole-4-carboxamide (CAS 61643-18-3)
- Afatinib Impurity 61 (CAS CATO-C4X-100661)
- 4-Chloro-5-(2-chloroethyl)-6-methyl-2-(methylthio)pyrimidine (CAS 178268-53-6)
- 4-Bromo-2-iodobenzo[d]oxazole (CAS 1804084-69-2)
- 1-(3,4-Dichlorobenzyl)-3-(3-((2,4-dichlorobenzyl)oxy)phenyl)-1H-pyrazole (CAS 477712-78-0)
- Myosin Kinase Inhibiting Peptide (CAS 119386-39-9)
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