5-Isobutyl-3-methylisoxazole-4-carbonyl chloride CAS 90415-81-9
| CAS No. | 90415-81-9 |
| Molecular Formula | C9H12ClNO2 |
| Molecular Weight | 201.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Isobutyl-3-methylisoxazole-4-carbonyl chloride (CAS 90415-81-9), a certified reference material (molecular formula C9H12ClNO2, MW 201.65 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 5-Isobutyl-3-methylisoxazole-4-carbonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 201.65 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures 5-Isobutyl-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 | C9H12ClNO2 |
| Molecular Weight | 201.65 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Isobutyl Standards
- n-Isobutyl-4-methoxy-2,4-dimethylpentan-1-amine (CAS 1496576-65-8)
- 2-((2-Isobutyl-3,4-dihydro-2H-pyrrol-5-yl)thio)ethanol (CAS 61309-25-9)
- 1-Isobutyl-1H-indole-4-carbaldehyde (CAS 1344215-22-0)
- Isobutyl 2-(morpholin-2-yl)acetate (CAS 1512527-95-5)
- 1-Isobutyl-1H-indole-3-carbaldehyde (CAS 433254-46-7)
- Isobutyl (2-oxotetrahydrofuran-3-yl)carbamate (CAS 51988-39-7)
- 1-Isobutyl-1H-indazole-3-carbaldehyde (CAS 1924188-81-7)
- 1-Isobutyl-1H-benzimidazole-2-carbaldehyde (CAS 610275-02-0)
Recommended Standards
- 5-Chloro-N-isopropyl-1-methyl-1H-pyrazole-4-carboxamide (CAS 648427-00-3)
- 6-Chloro-2-(2-(dimethylamino)ethyl)pyridazin-3(2H)-one (CAS 763053-53-8)
- 5-Chloro-2-(2-methoxy-ethoxy)-phenylamine (CAS 23987-21-5)
- 6-Chloro-N-(1-methoxypropan-2-yl)pyridazin-3-amine (CAS 939541-76-1)
- 4-(Chloromethyl)hexahydro-2H-cyclopenta[b]furan-2-ol (CAS 62870-38-6)
- N-(3-Amino-2-methylphenyl)-2-[2,4-di(tert-butyl)-phenoxy]acetamide (CAS 1020056-83-0)
- Cyanidin 3-(6''-malonylglucoside) (CAS 171828-62-9)
- N-(3-Cyclopropoxy-6-(methylamino)pyridin-2-yl)methanesulfonamide (CAS 1243481-73-3)
- tert-Butyl ((4-bromophenyl)(cyano)methyl)carbamate (CAS 774225-42-2)
- (1R,3R,4R,7S)-1-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-3-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2,5-dioxabicyclo[2.2.1]heptan-7-yl (2-cyanoethyl) diisopropylphosphoramidite (CAS 206055-76-7)
- 2-(2-Carboxyphenyl)isonicotinic acid (CAS 1263377-16-7)
- 2-Chloro-N-[2-oxo-2-(thiophen-2-yl)ethyl]acetamide (CAS 70996-66-6)
- 4-((Diisopropylamino)methyl)aniline dihydrochloride (CAS 916739-23-6)
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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