3,4-DIANILINOCYCLOBUT-3-ENE-1,2-DIONE

3,4-DIBROMO-2,5-DICHLOROTHIOPHENE

3,4-DIBROMO-2,5-DICHLOROTHIOPHENE

3,4-Dichlorobenzotrichloride

3,4-Dichlorobenzotrifluoride

3',4'-DICHLOROCYCLOHEXANECARBOXANILIDE

3,4-DIETHYL-1H-PYRROLE-2-CARBOXYLIC ACID ETHYL ESTER

3',4'-Difluoroacetophenone