4,4'-Dichlorodiphenyl sulphone 99%Bis(4-chlorophenyl) sulphone, 1,1'-Sulphonylbis(4-chlorobenzene)1-chloro-4-[(4-chlorobenzene)sulfonyl]benzeneBIS(P-CHLOROPHENYL)SULFONEBis(4-chlorophenyl) sulfone双(4-氯苯基)砜4,4′-二氯二苯砜4,4′-Dichlorodiphenyl sulfone4,4'-Dichlorodiphenylsulfonebis(4-chlorophenyl) sulfoneDCDPS4,4'-Dichlorodiphenyl sulfonebis(p-chlorophenyl) sulfone4,4'-二氯二苯砜4-Chlorophenyl sulfone