p toluenesulfonic an imiquimod ketone o chlorophenyl cyclo thiazole 5 cyanophthalide (r) (+) 2 methyl 2 p sulfinamide 2h pyran 4 carboxyl 2 chloro 6 fluorophe phenol 4 hydroxyquinoline 3 amino 2 hydroxyace acetophenone 4,4' dipyridyl pyridyl 1,2,3 trichloroprop trichloropropane chlorotributyltin dipy pyridyl hydroxyquinol quinoline fluorophenol phenol propene chloropropene 3 amino 2 hydroxyacetophenone p toluenesulfonic anhydride 2 chloro 5 chloromethylthiazole 3 dihydro 1 oxoisobenzofuran 5 carbo 2h pyran 4 carboxylic acid 4,4' dipyridyl 1,2,3 trichloropropa (r) (+) 2 methyl 2 propanesulfinamide 2 chloro 6 fluorophenol 4 quinolinol o chlorophenyl cyclopentyl 2 chlorophenyl tetrahydro 4h pyran 4 one 2h pyran 4 carboxylic acid o chlorophenyl cyclopenty ketone morpholine