Isoxazole-4-carbonyl chloride CAS 62348-15-6
| CAS No. | 62348-15-6 |
| Molecular Formula | C4H2ClNO2 |
| Molecular Weight | 131.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Isoxazole-4-carbonyl chloride 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.
CATO supplies Isoxazole-4-carbonyl chloride (CAS 62348-15-6), a certified reference material (molecular formula C4H2ClNO2, MW 131.52 g/mol) for analytical method development and quality control.
Structurally, Isoxazole-4-carbonyl chloride (C4H2ClNO2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 131.52 g/mol, it falls into the low-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C4H2ClNO2 |
| Molecular Weight | 131.52 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Isoxazole Standards
- 3-methyl-isoxazole-5-boronic acid (CAS 1190875-27-4)
- Isoxazole-3-carbothioamide (CAS 886371-53-5)
- Isoxazole-4-carbothioamide (CAS 885274-81-7)
- Isoxazole-4-acetic Acid (CAS 141679-57-4)
- Isoxazole-4-carboxylic acid methyl ester (CAS 15166-81-1)
- Isoxazole-4-carbohydrazide (CAS 885273-78-9)
- Ethyl isoxazole-5-carboxylate (CAS 173850-41-4)
- Ethyl isoxazole-4-carboxylate (CAS 80370-40-7)
Recommended Standards
- 6-Chloro-1,3,5-triazin-2(1H)-one (CAS 859764-71-9)
- 1H-1,2,4-TRAZOLE-5-CARBONYL CHLORIDE 60469-67-2 SC-57485 (CAS 60469-67-2)
- 6-Chloro-1,2,4,5-tetrazin-3-amine (CAS 254879-87-3)
- 3-Chloro-2-fluoropyridine (CAS 1480-64-4)
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- Methyl 3-[2-(3-piperidinyl)ethoxy]propanoatehydrochloride (CAS 1220032-59-6)
- Semaglutide Impurity 183 (CAS 159541-28-3)
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