The product is white to off-white crystalline solid.
Purity determined by HPLC is not less than 98.0%.
Water content is no more than 0.5%.
Residue on ignition is not more than 0.1%.
Heavy metals content is lower than 10 ppm.
Chromatogram shows no obvious impurity peaks, all quality indexes comply with pharmaceutical intermediate grade specifications.
5-Bromo-2-chloropyridine is a dihalogenated pyridine heterocyclic building block with two different leaving groups.
It enables selective sequential cross-coupling reactions at bromine and chlorine positions for directional molecular modification.
It is widely used in Suzuki, Heck, Sonogashira and Buchwald-Hartwig amination reactions in organic synthesis.
It serves as a key intermediate for the research and production of kinase inhibitors, anticancer agents, anti-inflammatory drugs and central nervous system therapeutics.
It is also extensively applied in medicinal chemistry compound library synthesis and structure-activity relationship investigation for new drug development. 
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