5-Isopropylisoxazole-3-carboxamide CAS 71433-23-3
| CAS No. | 71433-23-3 |
| Molecular Formula | C7H10N2O2 |
| Molecular Weight | 154.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Isopropylisoxazole-3-carboxamide (CAS 71433-23-3), molecular formula C7H10N2O2 and molecular weight 154.17 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H10N2O2, 5-Isopropylisoxazole-3-carboxamide contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 154.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 5-Isopropylisoxazole-3-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.
Physical & Chemical Properties
| Molecular Formula | C7H10N2O2 |
| Molecular Weight | 154.17 g/mol |
| Appearance | Off-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 DMSO, DMF, methanol |
| 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 2 |
Related Isopropylisoxazole Standards
- 4-Isopropylisoxazole-3-carboxylic acid (CAS 1260621-17-7)
- 3-Isopropylisoxazole-4-carboxylic acid (CAS 1368177-31-4)
- 3-Isopropylisoxazole-5-carboxylic acid (CAS 14633-22-8)
- 5-Isopropylisoxazole-3-carbonyl chloride (CAS 53064-56-5)
- 5-Ethyl-3-isopropylisoxazole-4-carboxylic acid (CAS 1048920-60-0)
- Ethyl 4-isopropylisoxazole-3-carboxylate (CAS 1332635-53-6)
- Ethyl 5-isopropylisoxazole-4-carboxylate (CAS 134540-96-8)
- Ethyl 3-isopropylisoxazole-5-carboxylate (CAS 2207-47-8)
Recommended Standards
- 5-Hydroxypyrimidine-2,4,6-tricarbaldehyde (CAS 88070-38-6)
- 5-Isopropylpyrazole-3-carboxylic Acid (CAS 92933-47-6)
- 5h,6h,7h-Pyrazolo[3,2-b][1,3]oxazin-2-ylmethanol (CAS 623565-62-8)
- 5-Isoquinolinecarbonitrile (CAS 27655-41-0)
- 5-[2-(5-Nitro-2-furanyl)ethenyl]-2-furancarboxylic Acid Methyl Ester (CAS 24269-96-3)
- 4-(4-Chlorophenyl)-5-(pyrazin-2-yl)-4h-1,2,4-triazole-3-thiol (CAS 113399-91-0)
- Benzo[c][2,7]naphthyridin-5(6H)-one (CAS 28664-57-5)
- Ofloxacin Impurity 10 (CAS 107884-32-2)
- 1-(5-Hydroxy-3-methylisoxazol-4-yl)-2-methylpropan-1-one (CAS 111461-02-0)
- 2,8-Dibromoquinoline (CAS 871507-79-8)
- 5-Amino-n-(4-fluorophenyl)-1-phenyl-1h-pyrazole-4-carboxamide (CAS 1015869-64-3)
- 6-Methyl-4-oxo-9-(2-phenylhydrazono)-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidine-3-carboxylic acid (CAS 70999-42-7)
- 7-(4-Ethylpiperazin-1-yl)-2,5-dimethyl-3-(p-tolyl)pyrazolo[1,5-a]pyrimidine (CAS 902008-80-4)
- [14-31]-Semaglutide (CAS CATO-C4X-2226262)
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