1-(3-(3,4-Dichlorophenyl)isoxazol-5-yl)ethan-1-one CAS 175277-36-8
| CAS No. | 175277-36-8 |
| Molecular Formula | C11H7Cl2NO2 |
| Molecular Weight | 256.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1-(3-(3,4-Dichlorophenyl)isoxazol-5-yl)ethan-1-one 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.
1-(3-(3,4-Dichlorophenyl)isoxazol-5-yl)ethan-1-one (CAS 175277-36-8) is a high-purity analytical reference standard with the molecular formula C11H7Cl2NO2 and a molecular weight of 256.08 g/mol.
Based on its molecular formula C11H7Cl2NO2, 1-(3-(3,4-Dichlorophenyl)isoxazol-5-yl)ethan-1-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 256.08 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H7Cl2NO2 |
| Molecular Weight | 256.08 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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.) | 2007 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichlorophenyl Standards
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- 1-(2,6-Dichlorophenyl)-1h-pyrrole-2-carboxylic acid (CAS 1478682-01-7)
- 3-(2,6-dichlorophenyl)-1H-pyrrole-2-carboxylic acid (CAS 1520810-96-1)
- 1-(3-(2,4-Dichlorophenyl)isoxazol-5-yl)ethan-1-one (CAS 175277-34-6)
- 1-(2,5-Dichlorophenyl)-1H-pyrrole-2-carboxylic acid (CAS 896051-94-8)
- 1-(3,4-Dichlorophenyl)-1H-pyrrole-2-carboxylic acid (CAS 952959-42-1)
- 1-(3,4-dichlorophenyl)-3-methylenedihydro-1H-pyrrole-2,5-dione (CAS 63233-85-2)
Recommended Standards
- (R)-4-(2-Iodoethyl)-2,2-dimethyl-1,3-dioxolane (CAS 165657-74-9)
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- 1-(3,5-Dichlorophenyl)-1H-pyrrole-2-carboxylic acid (CAS 773869-18-4)
- 1-[3-(2,6-Dichlorophenyl)isoxazol-5-yl]ethanone (CAS 499771-12-9)
- 3-(4-Hydroxy-6-methyl-2-oxo-1,2-dihydropyridin-1-yl)propanoic acid (CAS 904809-32-1)
- Benzyl (S)-5-amino-3,3-dimethylpiperidine-1-carboxylate (CAS 2173193-78-5)
- (7E)-5-Benzyl-2-methyl-3-phenyl-7-(phenylmethylidene)-2H,3H,3aH,4H,5H,6H,7H-pyrazolo[4,3-c]pyridine (CAS 477871-31-1)
- 1,1,2,2-Tetrafluoro-2-((1,1,1,2,3,3-hexafluoro-3-((1,2,2-trifluorovinyl)oxy)propan-2-yl)oxy)ethane-1-sulfonyl fluoride compound with perfluoroethene (1:1) (CAS 26654-97-7)
- (E)-1-(2-chloro-4-(4-chlorophenoxy)phenyl)-3-(dimethylamino)prop-2-en-1-one (CAS 477851-90-4)
- Prednisolone Impurity 52 (CAS 118864-87-2)
- 4-Formyl-3-hydroxy-2-naphthoic acid (CAS 38399-46-1)
- n-(Tert-pentyl)tetrazolo[1,5-b]pyridazin-6-amine (CAS 1088177-65-4)
- 2-Isopropyl-5-methylcyclohexyl nicotinate (CAS 40594-65-8)
- Semaglutide impurity 261 (CAS CATO-C4X-2226261)
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