Imidazopyridines are another class of bioisostere of the indole moiety, and also serve as effective purine mimics. Imidazopyridine-containing compounds have found recent applications as GABAA receptor agonists and proton pump inhibitors. The presence of a halogen allows these reagents to be used as substrates in various coupling reactions, including Suzuki-Miyaura cross-coupling reactions.

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Indoles and Indole Isosteres

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768022 6,8-Dichloroimidazo[1,2-a]pyridine 97% C7H4Cl2N2
732141 6-Bromoimidazo[1,5-a]pyridine C7H5BrN2
774359 3-Chloroimidazo[1,2-a]pyridine 97% C7H5ClN2
658995 2-(4-Bromophenyl)-6-iodoimidazo[1,2-a]pyridine 97% C13H8BrIN2