5-(4-Ethoxyphenyl)-3-(thiophen-2-ylmethylene)furan-2(3H)-one CAS 6781-91-5
| CAS No. | 6781-91-5 |
| Molecular Formula | C17H14O3S |
| Molecular Weight | 298.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-(4-Ethoxyphenyl)-3-(thiophen-2-ylmethylene)furan-2(3H)-one.
5-(4-Ethoxyphenyl)-3-(thiophen-2-ylmethylene)furan-2(3H)-one (CAS 6781-91-5) is a high-purity analytical reference standard with the molecular formula C17H14O3S and a molecular weight of 298.36 g/mol.
Structurally, 5-(4-Ethoxyphenyl)-3-(thiophen-2-ylmethylene)furan-2(3H)-one (C17H14O3S) contains a steroid core, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 298.36 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), 5-(4-Ethoxyphenyl)-3-(thiophen-2-ylmethylene)furan-2(3H)-one 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.
Physical & Chemical Properties
| Molecular Formula | C17H14O3S |
| Molecular Weight | 298.36 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Sulfur Atoms | 1 |
Related Ethoxyphenyl Standards
- 3-(4-Ethoxyphenyl)-2-sulfanyl-3,4-dihydroquinazolin-4-one (CAS 1035-51-4)
- 4-(4-Ethoxyphenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazole-3-thiol (CAS 111114-78-4)
- 4-(4-Ethoxyphenyl)-5-(4-pyridinyl)-4h-1,2,4-triazole-3-thiol (CAS 111290-75-6)
- 3-(2-Ethoxyphenyl)-2-sulfanyl-3,4-dihydroquinazolin-4-one (CAS 65141-61-9)
- 4-(2-Ethoxyphenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazole-3-thiol (CAS 452053-06-4)
- 4-(4-Ethoxyphenyl)-5-(pyridin-2-yl)-4h-1,2,4-triazole-3-thiol (CAS 893725-32-1)
- 4-Ethoxyphenyl 4-butylbenzoate (CAS 62716-65-8)
- 6-(4-Ethoxyphenyl)-3-methyl-[1,2]oxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 953901-57-0)
Recommended Standards
- 5-(4-Aminophenyl)-N-(4-methoxyphenyl)-1,3,4-thiadiazol-2-amine (CAS 478692-06-7)
- 5-(Methylsulfonyl)-1,3-diphenyl-1H-pyrazole (CAS 871110-23-5)
- 5-(3-Hydroxyphenyl)-8-thia-4,6-diazatricyclo[7.4.0.0,2,7]trideca-1(9),2(7),5-trien-3-one (CAS 357618-26-9)
- 5-(N,N-Dimethylsulfamoyl)-2-(pyrrolidin-1-yl)benzoic acid (CAS 565171-01-9)
- 2563-26-0 4,5-Dibromobenzene-1,2-diol 8501AD C6H4Br2O2 (CAS 2563-26-0)
- 2,3,3',4,4'-Pentachlorobiphenyl 13C12 (CAS 208263-62-1)
- Desacetyl Diltiazem-d6 (CAS 1246820-35-8)
- 6-chloro-1-iodoimidazo[1,5-a]pyridine (CAS 1426424-81-8)
- 2,8-Dichloroquinazolin-4-amine (CAS 1107694-84-7)
- n-(4-Bromophenyl)-2-(ethylamino)acetamide (CAS 730997-94-1)
- 2-(5-Isopropylbenzofuran-3-yl)acetic acid (CAS 890587-56-1)
- Anhydrotetracycline Hydrochloride (CAS 13803-65-1)
- 4-Bromo-N-(2,2,2-trifluoroethyl)benzamide (CAS 214261-65-1)
- Semaglutide impurity 51 (CAS CATO-C4X-222651)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com