1,2-Dihydro-7-(1,2-dimethylheptyl)-9-hydroxy-2,2,4,4-tetramethyl-4H-thieno(2,3-c)(1)benzopyran 1,4-Dihydro-7-(1,2-dimethylheptyl)-2,2,4,4-tetramethyl-2H-thieno(2,3-c)(1)benzopyran-9-ol 2H-Thieno(2,3-c)(1)benzopyran-9-ol, 1,4-dihydro-7-(1,2-dimethylheptyl)-2,2,4,4-tetramethyl- 56291-42-0 BRN 1327837