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Clopidol 2,5-PYRIDINEDICARBOXYLIC ACID 2-Chloro-5-(chloromethyl)pyridine Ethyl 2-(Chlorosulfonyl)acetate 6-Chloroimidazo[2,1-f]pyridazine 2-Chloropyridine-5-sulfonyl chloride (6-Chloro-2-pyridinyl)methanol 5-Chloropyridine-2-carboxylic acid Picloram 6-CHLOROPYRIDINE-2,3-DICARBOXYLIC ACID DIMETHYL ESTER