1,2,3-Trimethoxy-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one CAS 408330-93-8
| CAS No. | 408330-93-8 |
| Molecular Formula | C14H18O4 |
| Molecular Weight | 250.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
1,2,3-Trimethoxy-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one (CAS 408330-93-8), molecular formula C14H18O4 and molecular weight 250.29 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1,2,3-Trimethoxy-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one (C14H18O4) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C14H18O4 |
| Molecular Weight | 250.29 g/mol |
| Appearance | Off-white to pale 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related Trimethoxy Standards
- 2,3,4-Trimethoxy-6-(prop-2-yn-1-yloxy)benzaldehyde (CAS 861208-24-4)
- 4,6,7-Trimethoxy-5-methyl-2H-chromen-2-one (CAS 62615-63-8)
- 5,6,7-Trimethoxy-4-methyl-2H-chromen-2-one (CAS 7679-43-8)
- 5,6,7-Trimethoxy-1H-indole-2-carboxylic acid (CAS 128781-07-7)
- 4,5,6-Trimethoxy-1h-indole-2-carboxylic acid (CAS 30448-09-0)
- 6,7,8-trimethoxy-2,3,4,5-tetrahydro-1H-3-benzazepin-2-one (CAS 1421602-05-2)
- 6,7,8-Trimethoxy-2,4(1H,3H)-quinazolinedione (CAS 30896-98-1)
- 2,5,8-Trimethoxy-4-methylquinolin-6-amine (CAS 49584-51-2)
Recommended Standards
- 1,1'-(9H-Fluorene-2,7-diyl)diethanone (CAS 39665-89-9)
- 1,3-Diethyl 2-(3-methylphenyl)propanedioate (CAS 94112-78-4)
- 1,1'-(9H-Fluorene-2,5-diyl)diethanone (CAS 60505-53-5)
- 1,4,4-Trimethyl-7-oxo-4,5,6,7-tetrahydro-1H-indazole-3-carboxylic acid ethyl ester (CAS 802541-48-6)
- 6-Amino-2-fluoro-N,N-dimethyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide (CAS 2244517-33-5)
- 2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-(1-methylcyclobutyl)propanoic acid (CAS 1869480-16-9)
- 3-(2-Chlorophenyl)-1-(furan-2-ylmethyl)-1-(2-(thiophen-2-yl)ethyl)urea (CAS 1396853-47-6)
- 6-amino-5-(2-chloroacetyl)-1-cyclopropyl-1,2,3,4-tetrahydropyrimidine-2,4-dione (CAS 874754-20-8)
- (1H-indol-3-yl)methanethiol (CAS 86204-60-6)
- 3-(Phenylthio)piperidin-2-one (CAS 104261-03-2)
- 1,1,1-Trifluoro-3-methylpentan-2-ol (CAS 1251029-35-2)
- 2-(5-Amino-3-cyclopropyl-1H-pyrazol-1-yl)-3,4,5,6,7,8-hexahydroquinazolin-4-one (CAS 1207012-49-4)
- methyl 3-cyano-1H-pyrazole-4-carboxylate (CAS 33090-69-6)
- Semaglutide Impurity 115 (CAS CATO-C4X-2226115)
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