(Z,Z)-1,6-Bis(4-chlorophenyl)-3,4-dihydroxy-2,4-hexadiene-1,6-dione 139266-59-4 2,4-Hexadiene-1,6-dione, 1,6-bis(4-chlorophenyl)-3,4-dihydroxy-, (Z,Z)- BRN 5446064