1-(3-(4-Chlorophenyl)isoxazol-5-yl)ethan-1-one CAS 37091-33-1
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 37091-33-1 |
| Molecular Formula | C11H8ClNO2 |
| Molecular Weight | 221.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 1-(3-(4-Chlorophenyl)isoxazol-5-yl)ethan-1-one (CAS 37091-33-1), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C11H8ClNO2. Molecular weight: 221.64 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C11H8ClNO2 |
| Molecular Weight | 221.64 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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- 5-(3-Chlorophenyl)-1h-pyrrole-2-carboxylic acid (CAS 1048917-65-2)
- 5-(2-Chlorophenyl)-1h-pyrrole-2-carboxylic acid (CAS 1048919-09-0)
- 3-(4-Chlorophenyl)-1H-pyrazole-4-carbaldehydeoxime (CAS 1199253-23-0)
- 5-(4-Chlorophenyl)-3-methylisoxazole-4-carbaldehyde (CAS 1208081-07-5)
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- 4-(4-Chlorophenyl)-1H-pyrrole-3-carboxylic acid (CAS 122453-98-9)
- 3-(4-Chlorophenyl)-6-methyl-1,2,4-triazin-5(2H)-one (CAS 126542-93-6)
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Recommended Standards
- 1-(3-(3-Chlorophenyl)isoxazol-5-yl)ethanone (CAS 889939-01-9)
- 1-(3-Chloro-2-methylphenyl)-1H-pyrrole-2,5-dione (CAS 58670-25-0)
- 1-(2-chlorophenyl)-3-methylenedihydro-1H-pyrrole-2,5-dione (CAS 37010-60-9)
- 5-Bromo-2-(pyridin-3-yl)pyrimidine (CAS 1240594-99-3)
- N-Propyl-1H-imidazo[4,5-d]pyridazin-4-amine (CAS 500861-78-9)
- n-(2-Bromo-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)pivalamide (CAS 1309980-68-4)
- Cedazuridine isomer 1 (CAS 1141397-81-0)
- n-(1-(2-Aminoethyl)piperidin-4-yl)cyclopropanecarboxamide (CAS 1339849-96-5)
- 5-Bromo-2-(2,2,2-trifluoroethoxy)benzonitrile (CAS 876918-64-8)
- Semaglutide impurity 267 (CAS CATO-C4X-2226267)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com