2,2,2,2-Tetramethyl-6,6,7,7-tetramethoxy-3,4-dihydro-3,4-bi[2H-1-benzopyran]

2,2,2,2-Tetramethyl-6,6,7,7-tetramethoxy-3,4-dihydro-3,4-bi[2H-1-benzopyran] · CAS 17678-76-1