| Serial Number | Intermediate Name | CAS NO. | Struction |
|---|---|---|---|
| PI-11 | 3-acetylpyridine | 350-03-8 |  |
| PI-12 | 2-Chloro-1-(pyridin-3-yl)ethanone hydrochloride | 61889-48-3 |  |
| PI-13 | 3-Pyridinylboronic Acid | 1692-25-7 |  |
| PI-14 | 4-Pyridineboronic acid | 1692-15-5 |  |
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