2,3,5,6-TETRACHLOROP

2,3,5,6-Tetrachloroisonicotinaldehyde

2,3,5,6-Tetrachloro-4-pyridinecarboxaldehyde

2,3,5,6-TETRACHLOROPYRIDINE-4-CARBOXALDEHYDE

2,3,5,6-tetrachloro-1-forMylpyridine-4-carboxylic acid