5-(2,4-Dimethoxyphenyl)-5-oxovaleric acid CAS 4654-07-3
| CAS No. | 4654-07-3 |
| Molecular Formula | C13H16O5 |
| Molecular Weight | 252.26 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 5-(2,4-Dimethoxyphenyl)-5-oxovaleric acid (CAS 4654-07-3), a certified reference material (molecular formula C13H16O5, MW 252.26 g/mol) for analytical method development and quality control.
Based on its molecular formula C13H16O5, 5-(2,4-Dimethoxyphenyl)-5-oxovaleric acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 252.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C13H16O5 |
| Molecular Weight | 252.26 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Dimethoxyphenyl Standards
- Methyl 4-(2,5-dimethoxyphenyl)-4-oxobutanoate (CAS 1086-77-7)
- Ethyl 3-(2,6-dimethoxyphenyl)-3-oxopropanoate (CAS 125732-13-0)
- methyl 3-(3,4-dimethoxyphenyl)-2-methyloxirane-2-carboxylate (CAS 13605-37-3)
- Methyl 4-(3,4-dimethoxyphenyl)-4-oxobutanoate (CAS 14563-40-7)
- 3-(2-Acetyl-4,5-dimethoxyphenyl)propanoic acid (CAS 97025-29-1)
- 5-(2,3-Dimethoxyphenyl)-5-oxopentanoic acid (CAS 898792-29-5)
- 5-(2,5-Dimethoxyphenyl)-5-oxopentanoic acid (CAS 63467-20-9)
- 5-(2,6-Dimethoxyphenyl)-5-oxopentanoic acid (CAS 898792-47-7)
Recommended Standards
- 4'-Methoxyflavone (CAS 4143-74-2)
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- 4-Bromobenzocyclobutene (CAS 1073-39-8)
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- 3-(3-Hydroxyphenyl)acrylaldehyde (CAS 26231-89-0)
- 1,2-Benzenediol, (1,1-dimethylethyl)- (CAS 27213-78-1)
- 1-Allyl-4-methyl-1H-benzo[d]imidazole (CAS 172839-72-4)
- 3-Allyl-5,6-dihydro-4H-pyrrolo[1,2-c][1,2,3]triazole (CAS 1445792-52-8)
- 3-Chloro-2-methylthiopyridine-5-boronic acid (CAS 1451392-62-3)
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