Used as an intermediate in the synthesis of proton pump inhibitors (PPIs), particularly omeprazole and related anti-ulcer drugs. Its structure allows for selective reactivity in forming the active benzimidazole-pyridine scaffold found in these medications. The chloromethyl group enables alkylation steps, while the methoxy and methyl substituents enhance stability and regioselectivity during transformation. Widely utilized in pharmaceutical manufacturing due to its efficient conversion into key drug substances.