(4E)-3-(Chloromethyl)-4-(4-nitrobenzylidene)-isoxazol-5(4H)-one 1142199-30-1 9237AC C11H7ClN2O4 CAS 1142199-30-1
| CAS No. | 1142199-30-1 |
| Molecular Formula | C11H7ClN2O4 |
| Molecular Weight | 266.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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 supplies (4E)-3-(Chloromethyl)-4-(4-nitrobenzylidene)-isoxazol-5(4H)-one 1142199-30-1 9237AC C11H7ClN2O4 (CAS 1142199-30-1), a certified reference material (molecular formula C11H7ClN2O4, MW 266.64 g/mol) for analytical method development and quality control.
Structurally, (4E)-3-(Chloromethyl)-4-(4-nitrobenzylidene)-isoxazol-5(4H)-one 1142199-30-1 9237AC C11H7ClN2O4 (C11H7ClN2O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 266.64 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), (4E)-3-(Chloromethyl)-4-(4-nitrobenzylidene)-isoxazol-5(4H)-one 1142199-30-1 9237AC C11H7ClN2O4 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.
Physical & Chemical Properties
| Molecular Formula | C11H7ClN2O4 |
| Molecular Weight | 266.64 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 sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related E Standards
- (4E)-3-(Chloromethyl)-4-(2-nitrobenzylidene)-isoxazol-5(4H)-one 1142198-95-5 (CAS 1142198-95-5)
- 2-((Chloromethyl)thio)-6-methyl-4-(trifluoromethyl)nicotinonitrile (CAS 286833-00-9)
- 2-(Chloromethyl)-5-(furan-2-yl)-3h,4h-thieno[2,3-d]pyrimidin-4-one (CAS 851116-06-8)
- 1-Boc-2-(chloromethyl)benzimidazole (CAS 163798-87-6)
- 5-(Chloromethyl)-2-methanesulfonyl-1-(3-methoxypropyl)-1h-imidazole (CAS 1221341-19-0)
- 2-[4-(chloromethyl)-1,3-thiazol-2-yl]-N-phenylacetamide (CAS 926198-05-2)
- n-[4-(chloromethyl)-1,3-thiazol-2-yl]-n-phenylacetamide (CAS 58905-44-5)
- 1-(Chloromethyl)-4-iodo-2-methylbenzene (CAS 1261569-68-9)
Recommended Standards
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- 4-Chloro-6-(4-nitrophenoxy)pyrimidin-2-amine (CAS 130035-46-0)
- 4-Chloro-1-(3,4-difluorophenyl)-1H-pyrazolo[3,4-d]pyrimidine (CAS 919735-36-7)
- [2-(4-Methoxy-phenyl)-ethyl]-pyridin-2-yl-methylamine oxalate (CAS 1046803-53-5)
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- 5-Methyl-1H-pyrazole-4-carboxylic acid (CAS 1035225-22-9)
- 4-Bromo-5-cyano-2-(difluoromethyl)nicotinoyl chloride (CAS 1804912-13-7)
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