trans-2,6-Difluorocinnamic acid102082-89-3100 % similar 3-(2-Fluorophenyl)-2-propenoic acid451-69-467 % similar 3-(2,3-Difluorophenyl)-2-propenoic acid207981-48-466 % similar 3-(2,6-Dichlorophenyl)-2-propenoic acid5345-89-161 % similar (2E)-3-(3-Fluorophenyl)-2-propenoic acid20595-30-657 % similar 3-(3-Fluorophenyl)-2-propenoic acid458-46-857 % similar 3-(2,3,4,5,6-Pentafluorophenyl)-2-propenoic acid719-60-856 % similar trans-3,4-Difluorocinnamic acid112897-97-956 % similar trans-2,5-Difluorocinnamic acid112898-33-654 % similar 3-(2,3,4-Trifluorophenyl)-2-propenoic acid207742-85-654 % similar 3-(4-Chloro-2-fluorophenyl)-2-propenoic acid202982-65-854 % similar (2E)-3-(4-Chloro-2-fluorophenyl)-2-propenoic acid312693-55-354 % similar 3-(3,4,5-Trifluorophenyl)-2-propenoic acid152152-19-753 % similar P-Phenylenediacrylic acid16323-43-652 % similar Cinnamic acid140-10-352 % similar Cinnamic acid621-82-952 % similar trans-4-Fluorocinnamic acid14290-86-951 % similar 3-(4-Fluorophenyl)-2-propenoic acid459-32-551 % similar 3-(4-Bromo-2-fluorophenyl)-2-propenoic acid149947-19-350 % similar 3-(3-Bromo-4-fluorophenyl)-2-propenoic acid160434-49-150 % similar