15519-73-0

Gastrodin Impurity 22 2,2'-Bi[4-methylphenol] 4,4'-Dimethyl-2,2'-bi(phenol) 5,5'-Dimethyl-1,1'-biphenyl-2,2'-diol [1,1'-Biphenyl]-2,2'-diol, 5,5'-dimethyl-