This page provides supplementary chemical data on vitexin.
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as eChemPortal, and follow its directions.
| UV-Vis | |
| Lambda-max | UV : 335, 271 nm |
| Extinction coefficient | log ε: 4.08, 4.15 |
| IR | |
| Major absorption bands | ? cm-1 |
| NMR | |
| 1H-NMR (500 MHz, CD3COCD3 + D2O): δ 3.53 (1H, m, H-5′′), 3.54 (1H, m, H-3″), 3.57 (1H, m, H-4″), 3.74 (1H, dd, J = 12.3, 5.5 Hz, H-6a″), 3.77 (1H, dd, J = 12.3, 2.0 Hz, H-6b″), 4.11 (1H, t, J = 9.0 Hz, H-2″), 4.85 (1H, d, J = 9.9 Hz, H-1″) 6.44 (1H, s, H-8), 6.60 (1H, s, H-3), 6.95 (2H, d, J = 8.6 Hz, H-3′, 5′), 7.85 (2H, d, J = 8.6 Hz, H-2′, 6′) | |
| 13C-NMR (125 MHz, CD3COCD3 + D2O): δ 61.7 (C-6″), 70.6 (C-4″), 72.0 (C-2″), 74.5 (C-1″), 79.2 (C-3″), 81.6 (C-5″), 95.3 (C-8), 103.4 (C-3), 104.3 (C-10), 108.7 (C-6), 116.7 (C-3′, 5′), 122.4 (C-1′), 129.0 (C-2′, 6′), 157.7 (C-9), 161.0 (C-5), 162.0(C- 4′), 164.5 (C-7), 165.0 (C-2), 183.1 (C-4) | |
| Other NMR data | |
| MS | |
| Masses of main fragments | ESI-MS [M+H]+ m/z 433.1 |