| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| molecular weight of theophylline | 0.29 | 0.8 | 6196 | 47 | 32 |
| molecular | 1.35 | 0.1 | 4428 | 47 | 9 |
| weight | 1.62 | 0.1 | 6399 | 34 | 6 |
| of | 1.89 | 0.7 | 5078 | 18 | 2 |
| theophylline | 0.02 | 0.2 | 3409 | 8 | 12 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| molecular weight of theophylline | 0.21 | 0.4 | 1685 | 34 |
