| Serial Number | Intermediate Name | CAS NO. | Struction |
|---|---|---|---|
| PI-01 | 2-Bromopyridine-5-carbaldehyde | 149806-06-4 |  |
| PI-02 | 2-Chloropyridine-5-carbalde | 23100-12-1 |  |
| PI-03 | 2,6-Dichloronicotinic acid | 38496-18-3 |  |
| PI-04 | 2-Chloro-3-fluoropyridine-4-carboxaldehyd | 329794-28-7 |  |
| PI-05 | 3-Chloro-2-fluoro-4-iodopyridine | 796851-05-3 |  |
| PI-06 | 5-Chloro-2-Formylpyridine | 31181-89-2 |  |
| PI-07 | 2-Fluoropyridine-5-carboxaldehyde | 677728-92-6 |  |
| PI-08 | 5-Hydroxy-2-pyridinecarboxylic acid | 15069-92-8 |  |
| PI-09 | 2,3-Dihydroxypyridine | 16867-04-2 |  |
| PI-10 | 5-Bromo-pyridin-3-ol | 74115-13-2 |  |
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