2,6-Dichloronicotinic Acid丨CAS 38496-18-3

2,6-Dichloronicotinic acid (CAS 38496-18-3) is a halogenated pyridinecarboxylic acid widely used as an intermediate in pharmaceuticals, agrochemicals, and fine chemical synthesis. Its dichloro-substituted pyridine ring, combined with the carboxylic acid functionality, makes it a versatile scaffold for building heterocyclic compounds, enzyme inhibitors, and receptor ligands. In medicinal chemistry, it is employed in the synthesis of drug candidates where halogenation improves metabolic stability and binding affinity. In agrochemicals, it serves as a precursor for herbicides, fungicides, and insecticides with enhanced potency and environmental resilience. It is also applied in material science and coordination chemistry, where its pyridine and carboxyl groups provide useful sites for metal-ligand interactions.

The benefits of 2,6-dichloronicotinic acid lie in its dual reactivity and functional versatility. The chloro substituents are excellent leaving groups, enabling cross-coupling and substitution reactions to introduce diverse functional groups. The carboxylic acid group allows transformations such as esterification, amidation, or salt formation, expanding its synthetic utility. The pyridine ring contributes rigidity and electronic effects, enhancing biological activity and stability in derived compounds. These combined features make it a highly adaptable building block for efficient multi-step syntheses across pharmaceutical, agrochemical, and material chemistry applications.