(2008/06/13)
(2008/06/13)
4-Acetoxy-3-oxo-2,5-diphenyl-2,3-dihydrothiophen-1,1-dioxid
4,6-diphenylthieno-[3,4-d]-1,3-dioxol-2-one-5,5-dioxide
3-Hydrazono-4-hydroxy-2,5-diphenyl-2,3-dihydrothiophen-1,1-dioxid
4-Amino-3-oxo-2,5-diphenyl-2,3-dihydrothiophen-1,1-dioxid
4-Ethoxy-3-oxo-2,5-diphenyl-2,3-dihydrothiophen-1,1-dioxid