{4-[(tert-Butoxycarbonyl)amino]-1-piperidinyl}(4-methoxyphenyl)acetic acid

4-(2-Hydroxyphenyl)-5-methyl-2-(4-pyridyl)thiazole

4-(2,4-Dimethyl-3-oxo-3,4-dihydro-2H-benzo-1,4-oxazin-6-yl)-4-oxobutanoic acid

4-(4-Bromophenoxy)benzohydrazide

4-(4-Bromophenyl)-2-phenylthiazole-5-carboxylic acid

4-(4-Chlorophenyl)isoxazol-5-amine

4-(4-tert-Butylphenyl)-2-mercapto-6-oxo-1,6-dihydropyrimidine-5-carbonitrile

4-(Acetoxymethyl) thiobenzamide

4-(Methylsulfonyl)butanoic acid

4-Amino-6-methoxy-2-methylquinoline

4-Amino-7-chloroquinoline

4-Benzo[1,3]dioxol-5-ylmethyl-piperidine hydrochloride

4-Bromo-1-ethyl-1H-pyrrole-2-carbonitrile

4-Bromo-3-chloroquinoline

4-Bromo-8-chloroquinoline