4'-(Isopropylthio)propiophenone

4'-(Methoxymethyl)-4, 5', 8-trimethylfurocoumarin

4'-(N, N-Di(2-hydroxyethyl)amino)-1'-phenylazo-3-(6-(N, N-di(2-hydroxyethyl)amino))pyridine

4'-(N, N-Di(2-hydroxyethyl)amino)-1'-phenylazo-3-pyridine

4'-(N, N-Di(2-hydroxyethyl)amino)-6'-methyl-1'-phenylazo-3-pyridine

4'-(N, N-Diethylamino)-1'-phenylazo-3-pyridine

4'-(N, N-Diethylamino)-6-butoxy-1'-phenylazo-3-pyridine

4'-(N, N-Dimethylamino)-6'-acetamido-1'-phenylazo-3-pyridine

4'-(N, N-Dimethylamino)-6-methoxy-1'-phenylazo-3-pyridine

4'-(tert-Butyl)propiophenone

4'-(Trifluoromethoxy)propiophenone

4'-Acetamidochalcone

4'-Acetamidophenyl 4-guanidinobenzoate

4'-Acetylacrylanilide

4'-Allyloxyacetanilide

4'-Amidinophenyl-4-chloroanthranilic acid

4'-Amino-1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine

4'-Amino-3'-hydroxydoxorubicin

4'-Amino-6-hydroxyflavone

4'-Aminomethyl-4, 5'-dimethylangelicin hydrochloride