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NMR spectral data (CD3COCD3) of 5,6,7-trihydroxy-3,4'-dimethoxyflavone.
| Position | 5,6,7-trihydroxy-3,4'-dimethoxyflavone | Position | 5,6,7-trihydroxy-3,4'-dimethoxyflavone | ||
|---|---|---|---|---|---|
| 1H-NMR | 13C-NMR | 1H-NMR | 13C-NMR | ||
| 2 | 155.8 | 10 | 105.2 | ||
| 3 | 138.2 | 1' | 123.0 | ||
| 4 | 178.7 | 2' and 6' | 7.12 (2H, d, J = 8.80 Hz) | 130.0 | |
| 5 | 146.7 | 3' and 5' | 8.02 (2H, d, J = 8.80 Hz) | 113.9 | |
| 6 | 128.5 | 4' | 161.7 | ||
| 7 | 152.8 | OCH3 | 3.80 (3H, s) | 59.4 | |
| 8 | 6.42 (1H, s) | 93.5 | OCH3 | 3.90 (3H, s) | 59.9 |
| 9 | 149.7 | ||||
