(Z)-2,3-Dihydro-3-((4-methoxyphenyl)methylene)-4H-1-benzothiopyran-4-one 1,1-dioxide 130689-13-3 4H-1-Benzothiopyran-4-one, 2,3-dihydro-3-((4-methoxyphenyl)methylene)-, 1,1-dioxide, (Z)- BRN 3619665