(4E)-3-(Chloromethyl)-4-(2-methoxybenzylidene)-isoxazol-5(4H)-one 1142199-13-0 9228AC C12H10ClNO3 CAS 1142199-13-0
| CAS No. | 1142199-13-0 |
| Molecular Formula | C12H10ClNO3 |
| Molecular Weight | 251.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, (4E)-3-(Chloromethyl)-4-(2-methoxybenzylidene)-isoxazol-5(4H)-one 1142199-13-0 9228AC C12H10ClNO3 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 251.67 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO supplies (4E)-3-(Chloromethyl)-4-(2-methoxybenzylidene)-isoxazol-5(4H)-one 1142199-13-0 9228AC C12H10ClNO3 (CAS 1142199-13-0), a certified reference material (molecular formula C12H10ClNO3, MW 251.67 g/mol) for analytical method development and quality control.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C12H10ClNO3 |
| Molecular Weight | 251.67 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 sealed and dry, 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; Hygroscopic; reseal immediately after opening; 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-containing |
| Nitrogen Atoms | 1 |
Related E Standards
- 4-(5-(Chloromethyl)-1,2,4-oxadiazol-3-yl)-N-methylbenzamide (CAS 1119452-69-5)
- (4E)-3-(Chloromethyl)-4-(4-methoxybenzylidene)-isoxazol-5(4H)-one (CAS 1142199-12-9)
- (4E)-3-(Chloromethyl)-4-(3-methoxybenzylidene)-isoxazol-5(4H)-one (CAS 1142199-16-3)
- 5-(4-(Chloromethyl)phenyl)-3-methylisoxazole-4-carboxylic acid (CAS 1243415-10-2)
- 2-[2-(chloromethyl)-4-oxo-3,4-dihydroquinazolin-3-yl]acetamide (CAS 848369-71-1)
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Recommended Standards
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