3,4-BIS(1-METHYLHYDRAZINO)CYCLOBUT-3-ENE-1,2-DIONE

3,4-DIAMINOBENZOTRIFLUORIDE

3,4-DICHLORO-ALPHA-(CYCLOPENTYLMETHYL)-N-2-PYRIDINYL-BENZENEACETAMIDE

3,4-DICHLOROBENZENESULPHONYLHYDRAZIDE

3,4-Dichlorobenzonitrile

3,4-Dichlorobenzophenone

3,4-Dichlorobenzotrichloride

1-Bromo-3,4-dichlorobenzene

3,4-Dichlorobutyrophenone

3,4-Dichlorobutyrophenone