(3E)-3-[(Thiophen-2-yl)methylidene]-3,4-dihydro-2H-1-benzopyran-4-one CAS 256485-62-8
| CAS No. | 256485-62-8 |
| Molecular Formula | C14H10O2S |
| Molecular Weight | 242.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(3E)-3-[(Thiophen-2-yl)methylidene]-3,4-dihydro-2H-1-benzopyran-4-one (CAS 256485-62-8) is a high-purity analytical reference standard with the molecular formula C14H10O2S and a molecular weight of 242.29 g/mol.
The molecular framework of (3E)-3-[(Thiophen-2-yl)methylidene]-3,4-dihydro-2H-1-benzopyran-4-one (C14H10O2S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C14H10O2S |
| Molecular Weight | 242.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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 |
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- N-Allyl-2-methoxyacetamide (CAS 486393-59-3)
- Methyl 3-chloro-5h,6h,7h,8h-pyrido[4,3-c]pyridazine-6-carboxylate (CAS 39716-01-3)
- Ethyl 2-Amino-4-(pyridin-2-yl)thiophene-3-carboxylate (CAS 953909-28-9)
- 3-Amino-2-fluoro-3'-(trifluoromethoxy)biphenyl (CAS 1261780-30-6)
- ditert-butyl 6-formyl-7-methyl-spiro[3,4-dihydro-1,8-naphthyridine-2,3'-pyrrolidine]-1,1'-dicarboxylate (CAS 2755893-32-2)
- Semaglutide impurity 66 (CAS CATO-C4X-222666)
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