“…See DOI: https://doi.org/10.1039/d3gc03095d treating cholesterol gallstones, endometritis, cardiometabolic diseases, and as a tumor biomarker. 9,11,12 Industrial production of DCA involves extraction from animal bile acids-where it co-exists with CA 13 -or by removing the hydroxyl group on the 7th carbon atom of CA via 7α-dehydroxylase, 14 a process which also generates a CA-DCA mixture. Given that the only structural difference between CA and DCA is the hydroxyl group on the 7-position carbon atom, effective isolation of CA and DCA from complex biological extracts or synthetic reaction mixtures has remained highly difficult using conventional separation techniques.…”