Synonyms: (S)-(-)-6-HYDROXY-2,5,7,8-TETRAMETHYLCHROMAN-2-CARBOXYLIC ACID;(S)-(-)-6-hydroxy-2,5,7,8-tetramethyl-chroman-2-C;(2S)-2,5,7,8-Tetramethyl-6-hydroxy-3,4-dihydro-2H-1-benzopyran-2-carboxylic acid;(2S)-2,5,7,8-Tetramethyl-6-hydroxy-3,4-dihydro-2H-1-benzopyran-2α-carboxylic acid;(S)-3,4-Dihydro-6-hydroxy-2,5,7,8-tetramethyl-2H-1-benzopyran-2-carboxylic acid;(S)-6-Hydroxy-3,4-dihydro-2,5,7,8-tetramethyl-2H-1-benzopyran-2-carboxylic acid