2-Propenoic acid, 3-(3,4-dihydroxyphenyl)-
Cinnamic acid, 3,4-dihydroxy-
3-(3,4-Dihydroxyphenyl)-2-propenoic acid
Caffeic acid
3,4-Dihydroxycinnamic acid
3-(3,4-Dihydroxyphenyl)propenoic acid
4-(2-Carboxyethenyl)-1,2-dihydroxybenzene
4-(2′-Carboxyvinyl)-1,2-dihydroxybenzene
3,4-Dihydroxybenzeneacrylic acid
NSC 57197
NSC 623438
DHCA