(Z)-2,3-Dihydro-3-(1,3-benzodioxol-5-ylmethylene)-4H-1-benzothiopyran-4-one 130689-01-9 4H-1-Benzothiopyran-4-one, 2,3-dihydro-3-(1,3-benzodioxol-5-ylmethylene)-, (Z)- BRN 3619948