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2,4-DIBROMO-5-NITROPYRIDINE 2,4-DIBROMO-3-CHLOROPYRIDINE 2,4-Dichloro-3-iodopyridine 2,4-DICHLORO-5,7-DIHYDROFURO[3,4-D]PYRIMIDINE 2,4-Dibromo-3-iodopyridine 2,4-Dichloro-5-thiazolecarboxaldehyde tert-Butyl 2,4-dichloro-5,6-dihydropyrido[3,4-d]pyrimidine-7(8H)-carboxylate