(E)-4-(4-bromobenzylidene)-3-(chloromethyl)isoxazol-5(4H)-one CAS 1142199-54-9
| CAS No. | 1142199-54-9 |
| Molecular Formula | C11H7BrClNO2 |
| Molecular Weight | 300.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(E)-4-(4-bromobenzylidene)-3-(chloromethyl)isoxazol-5(4H)-one (C11H7BrClNO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
(E)-4-(4-bromobenzylidene)-3-(chloromethyl)isoxazol-5(4H)-one (CAS 1142199-54-9) is a high-purity analytical reference standard with the molecular formula C11H7BrClNO2 and a molecular weight of 300.54 g/mol.
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 (E)-4-(4-bromobenzylidene)-3-(chloromethyl)isoxazol-5(4H)-one 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 | C11H7BrClNO2 |
| Molecular Weight | 300.54 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 |
| 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.) | 1989 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
Related E Standards
- (E)-4-(3-bromobenzylidene)-3-(chloromethyl)isoxazol-5(4H)-one (CAS 1142199-51-6)
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