3,4'-Dichlorodiphenyl ether

3,4-DICHLORO-N-METHYLANILINE

1-(3,4-DICHLOROPHENYL)-2-THIOUREA

3,4-Difluorobenzoic acid

3,4-Difluorobenzyl alcohol

3,4-DIHYDRO-2H-1,5-BENZODIOXEPINE-6-CARBOXYLIC ACID

3,4-Dihydroxy-3-cyclobutene-1,2-dione