6-羟基-2,5,7,8-四甲基色满-2-羧酸

(6-Benzyloxy-3,4-dihydro-2,5,7,8-tetramethyl-2H-1-benzopyran-2-yl)methanol

ethyl 6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-chromene-2-carboxylate

2,3,4,5-tetrahydro-3,6,8,9-tetramethyl-1-benzoxepin-3,7-diol

methyl-6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylate