Butanoic acid, 4-((2-(acetyl(4-methoxyphenyl)amino)-1-oxopropyl)(4-methoxyphenyl)amino)-

Butanoic acid, 4-((2-(acetylamino)-1-oxo-3-phenyl-2-propenyl)amino)-

Butanoic acid, 4-((2-(acetylamino)-3-(4-methoxyphenyl)-1-oxo-2-propenyl)amino)-

Butanoic acid, 4-((2-(acetylamino)-4, 5-dichlorophenyl)amino)-, methyl ester

Butanoic acid, 4-((2-(benzoylamino)-3-methyl-1-oxo-2-butenyl)amino)-

Butanoic acid, 4-((2-acetylphenyl)amino)-4-oxo-

Butanoic acid, 4-((2-acetylphenyl)amino)-4-oxo-, methyl ester

Butanoic acid, 4-((2-benzoylphenyl)amino)-4-oxo-

Butanoic acid, 4-((2-carboxyethyl)nitrosoamino)-

Butanoic acid, 4-((2-chloro-5H-pyrrolo(3, 2-d)pyrimidin-4-yl)amino)-, hydrate (2:1)

Butanoic acid, 4-((2-cyanoethyl)amino)-4-oxo-, 2-phenylhydrazide

Butanoic acid, 4-((2-hydroxyethyl)amino)-4-oxosulfo-, 1-dodecyl ester, sodium salt (1:1)

Butanoic acid, 4-((2-hydroxyethyl)amino)-4-oxosulfo-, N-tallow alkyl derivs., disodium salts

Butanoic acid, 4-((2-hydroxyethyl)nitrosoamino)-

Butanoic acid, 4-((2-methyl-6-phenyl-5H-pyrrolo(3, 2-d)pyrimidin-4-yl)amino)-

Butanoic acid, 4-((2-methylphenyl)amino)-4-oxo-, compd. with 4, 5-dihydro-2-thiazolamine (1:1)

Butanoic acid, 4-((2-oxo-3-(1H-tetrazol-5-yl)-2H-1-benzopyran-6-yl)oxy)-

Butanoic acid, 4-((3, 5-dichlorophenyl)amino)-3-hydroxy-4-oxo-

Butanoic acid, 4-((3-((4-chlorobenzoyl)(2, 6-dimethylphenyl)amino)-1-oxopropyl)(4-methoxyphenyl)amino)-

Butanoic acid, 4-((3-((4-chlorobenzoyl)(4-methoxyphenyl)amino)-1-oxopropyl)(4-methoxyphenyl)amino)-