4'-Anilino-2-chloro-4-nitroazobenzene

4'-Azido-3'-O-methylthymidine

4'-Azido-5-chloro-2'-deoxyuridine

4'-Azidoazobenzene-4-oxysuccinimide ester

4'-Azidothymidine

4'-Azidothymidine 5'-triphosphate

4'-Azidouridine

4'-Azo-N-monomethyl-4-aminoazobenzene

4'-Benzoylbenzanilide

4'-Benzyloxy-2-bromopropiophenone

4'-Benzyloxy-3'-methoxy-7, 8-benzoflavone

4'-Bromo-2'-nitroacetanilide

4'-Bromo-3-chloropropiophenone

4'-Bromo-3-methylbiphenyl

4'-Bromo-4-(4-bromophenyl)butyrophenone

4'-Bromo-4-chlorobutyrophenone

4'-Bromo-alpha-(4-chlorophenyl)-alpha-((dimethylamino)methyl)(1, 1'-biphenyl)-4-methanol

4'-Bromo-alpha-(4-chlorophenyl)-alpha-ethyl(1, 1'-biphenyl)-4-methanol

4'-Bromo-alpha-(4-chlorophenyl)-alpha-vinyl-(1, 1'-biphenyl)-4-methanol

4'-Bromo-alpha-(phenylmethyl)(1, 1'-biphenyl)-4-methanol