(4S)-5,7-difluoro-3,4-dihydro-2H-1-benzopyran-4-ol

Its specific stereochemistry (the (4S) configuration) is crucial for its biological activity, making it valuable for developing targeted therapies. (4S)-5,7-difluoro-3,4-dihydro-2H-1-benzopyran-4-ol, also known as (S)-5,7-difluorochroman-4-ol, is used mainly as a key chiral intermediate in medicinal chemistry, especially for synthesizing drugs like Tegoprazan, a medication for acid reflux, and other benzimidazole-based compounds with potential applications in treating cancer or inflammatory conditions.