TABLE 3.
Characteristic 1HNMR and 13CNMR signals for tetrahydrocannabinolic acid (THCA) and Δ9-tetrahydrocannabinol (THC).
| THCA | THC | |||
|---|---|---|---|---|
| Position | δ 1HNMR (multiplicity) | δ13CNMR | δ 1HNMR (multiplicity) | δ13CNMR |
| 1 | 3.23 (m) | 33.5 | 3.20 (m) | 33.6 |
| 2 | 6.39 (s) | 123.2 | 6.31 (m) | 123.6 |
| 3 | - | 133.8 | - | 133.9 |
| 4 | 2.17 (m) | 31.2 | 2.16 (m) | 31.0 |
| 5 | 1.92 (m) | 25.0 | 1.89 (m) | 25.0 |
| 6 | 1.67 (m) | 45.6 | 1.69 (m) | 45.7 |
| 7 | 1.68 (s) | 78.8 | 1.69 (s) | 77.6 |
| 8 | 1.44 (s) | 27.6 | 1.42 (s) | 29.1 |
| 9 | 1.11 (s) | 19.2 | 1.10 (s) | 18.9 |
| 1′ | - | 109.7 | - | 110.8 |
| 2′ | - | 164.4 | - | 155.7 |
| 3′ | - | 102.1 | 6.15 (s) | 107.5 |
| 4′ | - | 146.8 | - | 142.8 |
| 5′ | 6.26 (s) | 112.3 | 6.28 (s) | 109.0 |
| 6′ | - | 159.8 | - | 154.0 |
| 1″ | 2.94 (m) | 36.5 | 2.39 (m) | 35.3 |
| 2″ | 1.57 (m) | 31.3 | 1.32 (m) | 29.5 |
| 3″ | 1.35 (m) | 32.0 | 1.27 (m) | 30.9 |
| 4″ | 1.35 (m) | 22.0 | 1.28 (m) | 21.8 |
| 5″ | 0.90 (t) | 14.1 | 0.88 (t) | 15.1 |
| 2′-OH | 12.19 (s) | - | 4.90 (s) | - |
| COOH | 11.97 (s) | 176.2 | - | - |