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4-Amino-3,5-dichloropyridine 2,4-dichloro-6-phenylpyrimidine 2,4-DIBROMO-5-NITROPYRIDINE 2,4-DIBROMO-3-CHLOROPYRIDINE 2,4-DICHLORO-5,7-DIHYDROFURO[3,4-D]PYRIMIDINE tert-Butyl 2,4-dichloro-5,6-dihydropyrido[3,4-d]pyrimidine-7(8H)-carboxylate 4-CHLORO-3-IODOPYRIDINE 2-Chloro-3-iodopyridine