4-(4-Ethoxyphenyl)-2-[(4-methylphenyl)sulfanyl]-4-oxobutanoic acid CAS 301193-86-2
| CAS No. | 301193-86-2 |
| Molecular Formula | C19H20O4S |
| Molecular Weight | 344.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-(4-Ethoxyphenyl)-2-[(4-methylphenyl)sulfanyl]-4-oxobutanoic acid 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.
4-(4-Ethoxyphenyl)-2-[(4-methylphenyl)sulfanyl]-4-oxobutanoic acid (CAS 301193-86-2), molecular formula C19H20O4S and molecular weight 344.42 g/mol, is a CATO reference standard with documented purity and traceability.
4-(4-Ethoxyphenyl)-2-[(4-methylphenyl)sulfanyl]-4-oxobutanoic acid (C19H20O4S) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H20O4S |
| Molecular Weight | 344.42 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Sulfur Atoms | 1 |
Related Ethoxyphenyl Standards
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Recommended Standards
- m-PEG3-Sulfone-PEG3 (CAS 1919045-00-3)
- 4-[3-(4-Isopropylphenyl)acryloyl]phenyl methanesulfonate (CAS 331460-73-2)
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- 5-Benzyl-6-(dimethoxymethyl)-2-(ethylthio)pyrimidin-4(1H)-one (CAS 21326-18-1)
- Tris(2,2'-bipyridine)nickel(II) bromide (CAS 15376-08-6)
- Emodin anthrone (CAS 491-60-1)
- 2-Cyclopropyl-6-(pyridin-3-yl)pyrimidin-4-amine (CAS 1159820-02-6)
- Cefadroxil Impurity 27 (CAS 55102-13-1)
- 6-Chloro-N-(3-(trifluoromethyl)phenyl)nicotinamide (CAS 384847-78-3)
- 3-Chloro-1H-pyrrolo[2,3-b]pyridin-5-ol (CAS 1190317-89-5)
- 1-(3-((Benzyloxy)methyl)piperidin-1-yl)-2-(benzylthio)ethan-1-one (CAS 1334369-00-4)
- (2,5-Dichlorophenyl)(1H-imidazol-1-yl)methanone (CAS 2243075-02-5)
- 2-((1-Benzylpyrrolidin-3-yl)methoxy)ethanamine (CAS 1353975-32-2)
- Des-Ala35-Tirzepatide (CAS CATO-CPTD788939)
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