Synonyms: diethyl[(2,3,5,6-tetrachlorobenzene-1,4-diyl)dimethanediyl]bis[hydrogen(phosphonate)];21521-82-4;NSC107964;AC1L6JAJ;AC1Q3L22;AR-1I5047;NSC-107964;ETHOXY-[[2,3,5,6-TETRACHLORO-4-[(ETHOXY-HYDROXY-PHOSPHORYL)METHYL]PHENYL]METHYL]PHOSPHINIC ACID;ethoxy-[[2,3,5,6-tetrachloro-4-[[ethoxy(hydroxy)phosphoryl]methyl]phenyl]methyl]phosphinic acid