4-Methyl-2-oxo-2H-chromen-7-yl octanoate CAS 20671-66-3
| CAS No. | 20671-66-3 |
| Molecular Formula | C18H22O4 |
| Molecular Weight | 302.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-Methyl-2-oxo-2H-chromen-7-yl octanoate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
4-Methyl-2-oxo-2H-chromen-7-yl octanoate (CAS 20671-66-3), molecular formula C18H22O4 and molecular weight 302.36 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-Methyl-2-oxo-2H-chromen-7-yl octanoate (C18H22O4) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C18H22O4 |
| Molecular Weight | 302.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Recommended Standards
- 4,4',5,5'-Tetramethoxy-2,2'-dimethyl-1,1'-biphenyl (CAS 62012-51-5)
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- 3,6-Dicyclohexylfuro[3,2-b]furan-2,5-dione (CAS 918413-53-3)
- 6,8-Di-tert-butyl-2-oxo-2H-chromene-3-carboxylic acid (CAS 646053-13-6)
- 2-(((Benzyloxy)carbonyl)amino)-4-fluorobenzoic acid (CAS 1019325-91-7)
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- 5-Nitrobenzo[c][1,2,5]selenadiazole (CAS 1128-90-1)
- 1-(1-Ethyl-1H-1,2,4-triazol-5-yl)ethanone (CAS 153334-25-9)
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- 1-Methyl-3-(trifluoromethyl)pyridin-2(1H)-one (CAS 1311829-52-3)
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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