2-Ethyl-3-methoxy-4H-pyran-4-one CAS 50741-69-0
| CAS No. | 50741-69-0 |
| Molecular Formula | C8H10O3 |
| Molecular Weight | 154.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Ethyl-3-methoxy-4H-pyran-4-one (CAS 50741-69-0), molecular formula C8H10O3 and molecular weight 154.16 g/mol, is a CATO reference standard with documented purity and traceability.
2-Ethyl-3-methoxy-4H-pyran-4-one (C8H10O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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), 2-Ethyl-3-methoxy-4H-pyran-4-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 | C8H10O3 |
| Molecular Weight | 154.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
Related Ethyl Standards
- 6-Ethyl-4-methoxy-2-pyranone (CAS 106950-13-4)
- 3-Methoxy-5-methyl-1,2-benzenediol (CAS 1125-67-3)
- 1-(3-Methoxy-5-methylfuran-2-yl)ethanone (CAS 162826-77-9)
- 4-Methoxy-3-methylbenzene-1,2-diol (CAS 77357-51-8)
- 4-Methoxy-6-methylbenzene-1,3-diol (CAS 78238-02-5)
- 5-Methoxy-4-methylbenzene-1,3-diol (CAS 55382-24-6)
- Methoxy(phenyl)methanediol (CAS 282548-08-7)
- 5-Methoxy-3,6-dimethylpyrazin-2-ol (CAS 100868-54-0)
Recommended Standards
- 2,6-Bis(hydroxymethyl)phenol (CAS 2937-59-9)
- 2-Ethyl-4-methylfuran-3-carboxylic acid (CAS 66505-31-5)
- 2-(propan-2-yl)furan-3-carboxylic acid (CAS 99698-80-3)
- 2-Ethylbenzene-1,3,5-triol (CAS 94632-41-4)
- 2-(Methylamino)-6-(trifluoromethyl)phenol (CAS 1243311-85-4)
- 4-(1,1-Difluoroethyl)aniline (CAS 1379282-27-5)
- 1-(3-(2-Hydroxyethoxy)pyrrolidin-1-yl)ethanone (CAS 1353975-23-1)
- Lifitegrast Impurity 119 (CAS CATO-C4X-2409119)
- 3-(4-(tert-Butyl)phenyl)prop-2-yn-1-ol (CAS 170859-77-5)
- 4-(1',5'-dimethyl-1H,1'H-3,4'-bipyrazol-1-yl)aniline,HCl (CAS 1431965-14-8)
- 3-Methyl-5-nitro-6-(pyridin-4-yl)pyrimidine-2,4(1H,3H)-dione (CAS 831231-65-3)
- 2-[(4-Chlorophenyl)methanesulfonyl]-1-(2,6-dimethylmorpholin-4-yl)ethan-1-one (CAS 303152-66-1)
- Esomeprazole Impurity 83 (CAS 142885-95-8)
- Macrophage Inhibitory Peptide (CAS 41961-56-2)
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