3767519 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3767519 > 2 > ChemIDplus > 072986540 > 202747-20-4 72986-54-0 Benzene, 1,1'-sulfonylbis(4-chloro-, polymer with 1,4-dichlorobenzene and sodium sulfide (Na2S) Benzene, 1,4-dichloro-, polymer with 1,1'-sulfonylbis(4-chlorobenzene) and sodium sulfide > 202747-20-4 72986-54-0 > 072986540 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=072986540 $$$$