5,6-Dimethoxy-2-[(4-methoxyphenyl)methylidene]-2,3-dihydro-1H-inden-1-one CAS 222965-37-9
| CAS No. | 222965-37-9 |
| Molecular Formula | C19H18O4 |
| Molecular Weight | 310.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5,6-Dimethoxy-2-[(4-methoxyphenyl)methylidene]-2,3-dihydro-1H-inden-1-one (CAS 222965-37-9), a certified reference material (molecular formula C19H18O4, MW 310.34 g/mol) for analytical method development and quality control.
Structurally, 5,6-Dimethoxy-2-[(4-methoxyphenyl)methylidene]-2,3-dihydro-1H-inden-1-one (C19H18O4) contains a flavonoid core, 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 310.34 g/mol, it falls into the moderately-high-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.
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.
As a certified reference material (CRM), 5,6-Dimethoxy-2-[(4-methoxyphenyl)methylidene]-2,3-dihydro-1H-inden-1-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 | C19H18O4 |
| Molecular Weight | 310.34 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
Related Dimethoxy Standards
- 6,7-Dimethoxy-2-phenethyl-4H-chromen-4-one (CAS 84294-87-1)
- 2-{[(6,7-dimethoxy-4-oxo-3,4-dihydroquinazolin-2-yl)methyl]sulfanyl}acetic acid (CAS 1010916-57-0)
- 2-((6,7-Dimethoxy-3-methyl-4-oxo-3,4-dihydroquinazolin-2-yl)thio)acetic acid (CAS 886500-86-3)
- 6,7-Dimethoxy-3,4-dihydro-2H-spiro[indole-3,1-isoquinolin]-2(1H)-one (CAS 35118-14-0)
- 1-((2,5-Dimethoxy-4-methylphenyl)sulfonyl)-2-ethyl-1H-imidazole (CAS 898644-95-6)
- 6,8-Dimethoxy-2-(2-nitrophenyl)quinoline (CAS 61472-32-0)
- 2,2-Dimethoxy-1-(3-(trimethoxysilyl)propyl)-1,2-azasilolidine (CAS 109084-60-8)
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Recommended Standards
- 4'-Acetylbenzo-15-crown-5, 97% (CAS 41757-95-3)
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- 6-Ethoxy-3-(4-methoxyphenyl)-4-methyl-2H-chromen-2-one (CAS 263365-03-3)
- 3-O-Benzyl-1,2-O-isopropylidene-a-D-glucofuranose (CAS 22529-61-9)
- 1-((2,4-Dichloro-3-methylphenyl)sulfonyl)-2-methyl-1H-imidazole (CAS 459178-40-6)
- ethyl 8-methyl-4-oxo-1,2,3,4-tetrahydronaphthalene-2-carboxylate (CAS 2044722-71-4)
- (R)-4,4-difluoropiperidin-3-ol (CAS 2306254-81-7)
- 6,7-difluoro-2,3-dihydro-1H-indole-2,3-dione (CAS 158580-95-1)
- 1-(ethylamino)-3-phenoxypropan-2-ol (CAS 58461-93-1)
- ((2R,3S)-3-Fluoro-1-methylpyrrolidin-2-yl)methanol (CAS 2417920-37-5)
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