6-hydroxy-2 5 7 8- tetramethyl chromene-2-carboxylic acid July 8, 2019 16 32 64 128 (±)-6-hydroxy-2 5 7 8-tetramethylchromane-2-carboxylic acid 2-(2 4-dihydroxyphenyl)-3 5 7-trihydroxy-4h-chromen-4-one
