Ethyl 4-(4-methoxyphenyl)-2,4-dioxobutanoate CAS 35322-20-4
| CAS No. | 35322-20-4 |
| Molecular Formula | C13H14O5 |
| Molecular Weight | 250.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ethyl 4-(4-methoxyphenyl)-2,4-dioxobutanoate (CAS 35322-20-4), a certified reference material (molecular formula C13H14O5, MW 250.25 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Ethyl 4-(4-methoxyphenyl)-2,4-dioxobutanoate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 250.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C13H14O5 |
| Molecular Weight | 250.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
Related Ethyl Standards
- 6-(4-Methoxyphenyl)-4,6-dioxohexanoic acid (CAS 119600-38-3)
- 2-(3-(2-Methoxyphenyl)-2-oxoimidazolidin-1-yl)acetic acid (CAS 1795297-71-0)
- (3E)-4-(4-Methoxyphenyl)-3-(methyl carboxy)but-3-enoic acid (CAS 86017-93-8)
- Ethyl 4-(2-methoxyphenyl)-2,4-dioxobutanoate (CAS 60943-39-7)
- Ethyl 4-(3-methoxyphenyl)-2,4-dioxobutanoate (CAS 60943-40-0)
- Methyl 2-(2-methoxyphenyl)-5-oxotetrahydrofuran-3-carboxylate (CAS 385376-40-9)
- 3-(4-Methoxyphenyl)pyrazolo[1,5-a]pyrimidine-6-carbonitrile (CAS 303150-57-4)
- 5-(4-Methoxyphenyl)-6-methylpyrazine-2,3-dicarbonitrile (CAS 88549-02-4)
Recommended Standards
- Ethyl 4-(benzo[d][1,3]dioxol-5-yl)-4-oxobutanoate (CAS 951889-25-1)
- Ethyl 5,6-dimethoxy-1H-indazole-3-carboxylate (CAS 29281-06-9)
- Ethyl 3-carboethoxybenzoylformate (CAS 732249-84-2)
- Goniotriol (CAS 96405-62-8)
- 1-(6-Chloro-2-methylpyrimidin-4-yl)piperidine-4-carboxamide (CAS 1280704-72-4)
- 3-((2-Hydroxy-3,3-dimethylbutyl)amino)thietane 1,1-dioxide (CAS 1876264-60-6)
- 4-Propylbenzoic Acid (CAS 2438-05-3)
- Methyl 5-ethyl-4-methyl-1H-pyrazole-3-carboxylate hydrochloride (CAS 1085453-49-1)
- 4-(Dimethylamino)-2-methoxy-5-nitrobenzoic acid (CAS 42832-21-3)
- 5-Mercapto-1H-imidazo[4,5-b]pyridin-7-ol (CAS 467245-45-0)
- 2-Chloro-2-methyltetrahydro-2H-pyran (CAS 89357-26-6)
- (6-Methyl-1,3-dihydroisobenzofuran-5-yl)methanol (CAS 941600-62-0)
- 5-(Difluoromethyl)-2-formyl-3-methylisonicotinonitrile (CAS 1806908-37-1)
- Semaglutide impurity 73 (CAS CATO-C4X-222673)
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