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2',3'-Dimethoxycinnamic acid7345-82-639 % similar 3-(2,3-Dimethoxyphenyl)-2-propenoic acid7461-60-139 % similar 2,4,5-Trifluorocinnamic acid247170-17-838 % similar N-Phenylmaleamic acid555-59-938 % similar 3-(2,4-Dichlorophenyl)-2-propenoic acid1201-99-638 % similar trans-2,4-Dichlorocinnamic acid20595-45-338 % similar (2E)-3-(2,5-Dichlorophenyl)prop-2-enoic acid20595-47-538 % similar 4-Nitrocinnamic acid619-89-638 % similar trans-4-Nitrocinnamic acid882-06-438 % similar 3-(3-Nitrophenyl)-2-propenoic acid555-68-038 % similar Urocanic acid104-98-338 % similar 3-(3,4,5-Trifluorophenyl)-2-propenoic acid152152-19-738 % similar 3,4-Dimethoxycinnamic acid14737-89-437 % similar 3-[4-(Acetyloxy)phenyl]-2-propenoic acid15486-19-837 % similar 3-(2-Bromo-5-fluorophenyl)-2-propenoic acid202865-70-137 % similar 3′,4′-Dimethoxycinnamic acid2316-26-937 % similar 3′,4′-Methylenedioxycinnamic acid2373-80-037 % similar 2-Bromo-4-fluorocinnamic acid289038-17-137 % similar 3-(2,3,4-Trimethoxyphenyl)-2-propenoic acid33130-03-937 % similar 4-Acetamidocinnamic acid7152-04-737 % similar