Pharmaceutical Intermediates C₅H₈O₃

(S)-(−)-Tetrahydro-2-furoic acid​ CAS 87392-07-2 is a chiral, non-proteinogenic carboxylic acid featuring a saturated furan ring (tetrahydrofuran, THF) with a carboxylic acid group at the 2-position. It is the single (S)-enantiomer of 2-tetrahydrofuroic acid, a valuable chiral building block​ in organic synthesis. This compound is a high-value, enantiomerically pure chiral building block​ that provides a ready-to-use, metabolically stable, and conformationally constrained tetrahydrofuran (THF) carboxylic acid scaffold in the (S)-configuration. Its primary value lies in enabling efficient, stereocontrolled synthesis of complex molecules for life sciences.