(E)-2-(3,4-dimethoxyphenyl)-3-oxobutanal O-(4-chlorobenzyl) oxime CAS 478260-69-4
| CAS No. | 478260-69-4 |
| Molecular Formula | C19H20ClNO4 |
| Molecular Weight | 361.82 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies (E)-2-(3,4-dimethoxyphenyl)-3-oxobutanal O-(4-chlorobenzyl) oxime (CAS 478260-69-4), a certified reference material (molecular formula C19H20ClNO4, MW 361.82 g/mol) for analytical method development and quality control.
Based on its molecular formula C19H20ClNO4, (E)-2-(3,4-dimethoxyphenyl)-3-oxobutanal O-(4-chlorobenzyl) oxime contains a flavonoid core, 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 361.82 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), (E)-2-(3,4-dimethoxyphenyl)-3-oxobutanal O-(4-chlorobenzyl) oxime 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 | C19H20ClNO4 |
| Molecular Weight | 361.82 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 |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related E Standards
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Recommended Standards
- (4-Chlorophenyl)(5-methoxy-3-phenyl-1H-indol-1-yl)methanone (CAS 22789-48-6)
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- (2E)-N-[(4-Chlorophenyl)methyl]-3-(2,3,4-trimethoxyphenyl)prop-2-enamide (CAS 647031-59-2)
- 2-(4-(2-(4-Chlorobenzamido)ethyl)phenoxy)butanoic acid (CAS 63927-29-7)
- 3-(4-chlorobenzyl)-4-(5-chloro-1,3-thiazol-2-yl)-2-butanone (CAS 478248-67-8)
- 4-Amino-1-(2-methoxyethyl)-1H-pyrazole (CAS 948570-74-9)
- 1',4',6',7'-Tetrahydrospiro[cyclopentane-1,5'-indazole]-3'-carboxylic acid (CAS 1600487-91-9)
- 2-Methylisonicotinohydrazide hydrochloride (CAS 3758-59-6)
- 3-(3,5-Dimethyl-1H-pyrazol-4-yl)-N-methylpropan-1-amine (CAS 936939-86-5)
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- (Tetrahydrofuran-2-yl)methyl butyrate (CAS 2217-33-6)
- PHENYLETHYNYLMAGNESIUM BROMIDE, 1.0M SOL UTION IN TETRAHYDROFURAN 6738-06-3 (CAS 6738-06-3)
- H-p-Chloro-Phe-D-Cys-β-(3-pyridyl)-Ala-D-Trp-Lys-tBu-Gly-Cys-2-Nal-NH2 (Disulfide bond) (CAS 209006-18-8)
- Semaglutide impurity 204 (CAS CATO-C4X-2226204)
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