5,6-dichloro-2-(4-chlorophenoxy)-1,3,2-dioxaphosphepine

p-chlorophenyl-β-cyanoethylphosphoric acid trimethylammonium salt

p-chlorophenyl-bis-(β-cyanoethyl)-phosphate

p-chlorophenyl-β-cyanoethylphosphoric acid cyclohexylammonium salt

5'-O-(dimethoxytrityl)-N-isobutyrylguanine 3'-(p-chlorophenylcyanoethyl phosphate)