N-caffeoyl-4-aminobutyric acid

N-Caffeoyl-4-amino-n-butyric acid

4-(3-(3,4-Dihydroxyphenyl)acrylaMido)butanoic acid

4-[[3-(3,4-Dihydroxyphenyl)-1-oxo-2-propenyl]amino]butanoic acid

4-[[3-(3,4-Dihydroxyphenyl)-1-oxo-2-propen-1-yl]amino]butanoic acid