Ethyl 5-phenyl-2-(4-(p-tolyloxy)butanamido)thiophene-3-carboxylate CAS 433233-18-2
| CAS No. | 433233-18-2 |
| Molecular Formula | C24H25NO4S |
| Molecular Weight | 423.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C24H25NO4S, Ethyl 5-phenyl-2-(4-(p-tolyloxy)butanamido)thiophene-3-carboxylate contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 423.52 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Ethyl 5-phenyl-2-(4-(p-tolyloxy)butanamido)thiophene-3-carboxylate (CAS 433233-18-2) is a high-purity analytical reference standard with the molecular formula C24H25NO4S and a molecular weight of 423.52 g/mol.
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 | C24H25NO4S |
| Molecular Weight | 423.52 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- Ethyl 5-phenyl-2-(4-(m-tolyloxy)butanamido)thiophene-3-carboxylate (CAS 459415-15-7)
- 5-(6-((2-Fluorobenzyl)thio)pyridazin-3-yl)-2-(4-methoxyphenyl)-4-methylthiazole (CAS 1040636-41-6)
- Diisopropyl 2-tosyl-2-azaspiro[3.3]heptane-6,6-dicarboxylate (CAS 1237542-10-7)
- 2-((5-(4-(2-Fluorobenzoyl)piperazin-1-yl)-1,3,4-thiadiazol-2-yl)thio)-N-isopropylacetamide (CAS 1105200-19-8)
- 4-Cyclopropoxy-2-isopropylbenzenesulfonamide (CAS 1243375-52-1)
- 4-Chloro-3-(3-fluorophenyl)pyridin-2-amine (CAS 1381941-71-4)
- Org 12962 HCl (CAS 210821-63-9)
- (2S)-1-[(4-Methylphenyl)sulfonyl]-2-(phenylmethyl)aziridine (CAS 62596-64-9)
- Methyl 3-(2,5-dimethylphenyl)-3-oxopropanoate (CAS 1226202-70-5)
- 5'-O-DMT-N4-Bz-2'-F-dC (CAS 146954-77-0)
- 3,5-Dimethylphenyl 5-chloro-2-(methylthio)pyrimidine-4-carboxylate (CAS 879951-61-8)
- 1-((2R,3R,4R,5R)-3,4-Dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-1H-pyrazolo[3,4-d]pyrimidine-4(2H)-thione (CAS 54524-71-9)
- Salbutamol Impurity 87 (CAS 115787-53-6)
- Tau Peptide (295-309) trifluoroacetate salt (CAS 330456-46-7)
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