Ethyl 2-(4-chloro-5-(4-ethoxyphenyl)-3-oxofuran-2(3H)-ylidene)acetate CAS 139266-46-9
| CAS No. | 139266-46-9 |
| Molecular Formula | C16H15ClO5 |
| Molecular Weight | 322.74 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution, Ethyl 2-(4-chloro-5-(4-ethoxyphenyl)-3-oxofuran-2(3H)-ylidene)acetate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 322.74 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
CATO supplies Ethyl 2-(4-chloro-5-(4-ethoxyphenyl)-3-oxofuran-2(3H)-ylidene)acetate (CAS 139266-46-9), a certified reference material (molecular formula C16H15ClO5, MW 322.74 g/mol) for analytical method development and quality control.
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), Ethyl 2-(4-chloro-5-(4-ethoxyphenyl)-3-oxofuran-2(3H)-ylidene)acetate 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 | C16H15ClO5 |
| Molecular Weight | 322.74 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
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Recommended Standards
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- (5-((4-Chlorophenyl)thio)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methanol (CAS 318239-52-0)
- 8-Chloro-7-(4-fluorobenzyl)-1,3-dimethyl-1H-purine-2,6(3H,7H)-dione (CAS 304877-92-7)
- 3-{[(2,3-difluorophenyl)methyl]amino}-1h-pyrazole-5-carboxylic acid (CAS 1159940-85-8)
- (1R,2R)-2-phenylcyclobutan-1-amine hydrochloride (CAS 69241-18-5)
- 3,6,7-Trimethylquinoxalin-2-ol (CAS 28082-86-2)
- 4-Chloro-3-nitro-2-pyridone (CAS 165547-79-5)
- 1-(3,4,5-Trimethoxyphenyl)cyclopropanamine (CAS 1176042-45-7)
- 1-Ethyl-4,4-dimethylcyclohexan-1-ol (CAS 1343944-84-2)
- 4-((2-(4-Chlorophenyl)-2-oxoethyl)thio)-1,5,6,7-tetrahydro-2H-cyclopenta[d]pyrimidin-2-one (CAS 898450-14-1)
- Ethyl 1-(3-methoxyphenyl)-4-methyl-1H-pyrazole-3-carboxylate (CAS 1186539-03-6)
- (3S,4S)-2-methyl-1-oxo-3-phenyl-1,2,3,4-tetrahydroisoquinoline-4-carboxylic acid (CAS 60734-32-9)
- Semaglutide Impurity 18 (CAS 1671100-14-3)
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