4-(4-NITRO-BENZYL)-1-(2-OXO-2-P-TOLYL-ETHYL)-PYRIDINIUM, BROMIDE

4-(4-NITROBENZYLIDENE)-2-PHENYL-2-OXAZOLIN-5-ONE

4-(4-Phenoxybenzyl)-piperidine hydrochloride

4-(4-tert-Butoxycarbonylpiperazinyl)phenylboronic acid pinacol ester

4-(Dimethylamino)tetrahydro-3-furanyl acetate

4-(Ethoxycarbonyl)methoxyphenylboronic acid, pinacol ester

4-(Ethoxycarbonylmethyl)phenylboronic acid

[4-(Ethylamino)-6-methyl-2-(methylsulfanyl)-5-pyrimidinyl]methanol

4-(HEPTYLOXY)-M-ANISALDEHYDE

4-(HEXADECYLSULFAMOYL)BENZENESULFONIC (3-ME-2-BENZOTHIAZOLINYLIDENE)HYDRAZIDE

4-(Hydrazinecarbonyl)phenylboronic acid pinacol ester

4-(Iodomethyl)-2,2-dimethyl-1,3-dioxolane

4-(M-TOLYLTHIO)ANILINE

4-(METHOXYCARBONYL)PHENYL N-(4-FLUORO-3-NITROPHENYL)CARBAMATE

4-(METHYLSULFANYL)-2-((5E)-5-{[5-(4-NITROPHENYL)-2-FURYL]METHYLENE}-4-OXO-2-THIOXO-1,3-THIAZOLIDIN-3-YL)BUTANOIC ACID