3-Methylisoxazole-4-carbonyl chloride CAS 62348-18-9
| CAS No. | 62348-18-9 |
| Molecular Formula | C5H4ClNO2 |
| Molecular Weight | 145.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 145.54 g/mol gives 3-Methylisoxazole-4-carbonyl chloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Methylisoxazole-4-carbonyl chloride (CAS 62348-18-9), molecular formula C5H4ClNO2 and molecular weight 145.54 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 3-Methylisoxazole-4-carbonyl chloride is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 145.54 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 3-Methylisoxazole-4-carbonyl chloride 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.
Physical & Chemical Properties
| Molecular Formula | C5H4ClNO2 |
| Molecular Weight | 145.54 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 Methylisoxazole Standards
- 4-Methylisoxazole-5-carbonyl chloride (CAS 1108713-21-8)
- 3-methylisoxazole-5-carbonyl chloride (CAS 49783-72-4)
- 5-Methylisoxazole-3-carbonyl chloride 5-methyl-isoxazole-3-carbonyl chloride 5-methyl-1,2-oxazole-3-carbonyl chloride 39499-34-8 (CAS 39499-34-8)
- 5-Methylisoxazole-3-carbothioamide (CAS 77358-26-0)
- 3-Methylisoxazole-5-carbohydrazide (CAS 89179-79-3)
- 5-Methylisoxazole-3-carbohydrazide (CAS 62438-03-3)
- Methyl 3-methylisoxazole-5-carboxylate (CAS 1004-96-2)
- 3-Methylisoxazole-4-acetic Acid (CAS 1008304-86-6)
Recommended Standards
- 3-(Chloromethyl)isoxazole-5-carbaldehyde (CAS 2375273-40-6)
- 2-Methyl-1,3-oxazole-4-carbonyl chloride (CAS 62348-22-5)
- 4-Chloropyridine-2,6-diol (CAS 62616-12-0)
- 2-Chloro-5-hydroxypyridine 1-oxide (CAS 727736-64-3)
- Pyridoxine-d2 HCl (CAS 5027-82-7)
- 2-(4-Aminophenyl)-3-((benzyl(methyl)amino)methyl)-7-(2,6-difluorobenzyl)-5-isobutyrylthieno[2,3-b]pyridin-4(7H)-one (CAS 174072-26-5)
- (5-((Tetrahydro-2h-pyran-4-yl)oxy)pyridin-3-yl)boronic acid (CAS 1103862-08-3)
- 3-Fluoro-4-iodoaniline (CAS 656-66-6)
- (2R,4S)-4-Fluoro-5-oxopyrrolidine-2-carboxamide (CAS 261623-76-1)
- N-(1-(3-methoxyphenyl)propan-2-yl)-2-methylpropan-1-amine (CAS 1310154-72-3)
- 1-(Tetrahydro-2H-thiopyran-2-yl)ethan-1-ol (CAS 1352515-46-8)
- 2-(Difluoromethyl)-5-iodo-3-(trifluoromethoxy)pyridine-4-carboxaldehyde (CAS 1805111-57-2)
- 4-Chloro-6-(4-methyl-1-piperidinyl)-1,3,5-triazin-2-amine (CAS 1220016-74-9)
- Semaglutide impurity 227 (CAS CATO-C4X-2226227)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com