2 2 5 7 8 pentamethyl 6 hydroxychroman July 8, 2019 16 32 64 128 2 2 5 7 8-pentamethyl-6-hydroxychroman 2 5 5-trimethyl-6-heptyne 2 4 5 5 8a-pentamethyl-6 7 8 8a-tetrahydro-5h-chromene 2 2 6 6-tetramethyl-3 5-heptanedionate (±)-6-hydroxy-2 5 7 8-tetramethylchromane-2-carboxylic acid
