4-((3-(Acetyl(2,6-dimethylphenyl)amino)-1-oxopropyl)(4-methoxyphenyl)amino)butanoic acid 71455-72-6 Butanoic acid, 4-((3-(acetyl(2,6-dimethylphenyl)amino)-1-oxopropyl)(4-methoxyphenyl)amino)- N-(N-Acetyl-3-(2,6-dimethylanilino)propionyl)-4-(p-anisidino)butyric acid