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4-Ethoxycinnamic acid2373-79-7100 % similar 3-(4-Propoxyphenyl)acrylic acid69033-81-478 % similar 4-Methoxycinnamic acid830-09-165 % similar 4-Methoxycinnamic acid943-89-565 % similar p-Phenylenediacrylic acid16323-43-663 % similar 3-[4-(Acetyloxy)phenyl]-2-propenoic acid15486-19-860 % similar 3-(2-Ethoxyphenyl)-2-propenoic acid69038-81-957 % similar 4-Methylcinnamic acid1866-39-357 % similar 3-[4-(Trifluoromethoxy)phenyl]acrylic acid783-13-156 % similar 3-(4-Formylphenyl)-2-propenoic acid23359-08-254 % similar P-Coumaric acid501-98-454 % similar p-Coumaric acid7400-08-054 % similar Cinnamic acid140-10-353 % similar Cinnamic acid621-82-953 % similar 4-Bromocinnamic acid1200-07-353 % similar trans-4-Fluorocinnamic acid14290-86-953 % similar 4-Chlorocinnamic acid1615-02-753 % similar 3-(4-Aminophenyl)-2-propenoic acid2393-18-253 % similar 3-(4-Fluorophenyl)-2-propenoic acid459-32-553 % similar 4-tert-Butylcinnamic acid1208-65-753 % similar