4-(CHLOROMETHYL)-2,2-DIMETHYL-1,3-DIOXOLANE

4-CHLOROMETHYL-2-METHYLTHIAZOLE HYDROCHLORIDE

4-(Chloromethyl)-2-phenyl-1,3-thiazole

4-(DIFLUOROMETHOXY)PHENACYL BROMIDE

4-(DIHEXYLAMINO)BENZOIC ACID

4-DIMETHYLAMINOBENZHYDRAZIDE

(3R)-(+)-3-ACETAMIDOPYRROLIDINE

4-ETHOXYMETHYLENE-2-PHENYL-2-OXAZOLIN-5-ONE

4-(ETHYLAMINO)-N-BUTYLAMINE

4-(ETHYLTHIO)-6-ISOPROPYL-1,3,5-TRIAZIN-2-AMINE

4-Formylphenoxyacetic acid