4-(2-CHLOROACETYL)-ANTIPYRINE

4-(2-Chloroethyl)-1H-pyrazole hydrochloride

4-(2-Chlorophenyl)-3-methyl-1H-pyrazole

4-(2-ETHOXY-PHENYLAZO)-NAPHTHALEN-1-YLAMINE

4-(2-Fluoro-6-nitrophenyl)morpholine

4-(2-Formyl-phenoxymethyl)benzoic acid methyl ester

4-(2-METHOXY-5-METHYLPHENYL)-1-(3-NITROBENZYLIDENE)-3-THIOSEMICARBAZIDE

4-(2-METHOXYPHENOXY)-N-(4-METHYLBENZYLIDENE)ANILINE

4-(2-METHYL-1-PIPERIDINYL)-2-PHENYLQUINOLINE HYDROBROMIDE

4-(2-METHYLCYCLOHEXYL)-2-PHENYLQUINAZOLINE

4-(2-(OXO(2-TOLUIDINO)ACETYL)CARBOHYDRAZONOYL)PHENYL 4-BROMOBENZOATE

4-(2-NITROPHENYL)BUTYRIC ACID

4-(2-ACETYLAMINO-ETHOXY)-BENZOIC ACID METHYL ESTER

4-(2-THIENYL)-1,3-THIAZOL-2-AMINE

4-(2,2-DIMETHYL-PROPYL)-2,2-DIMETHYL-PENT-4-ENOIC ACID ETHYL ESTER