Urocanic acid104-98-3100 % similar 3-(4-Pyridinyl)-2-propenoic acid5337-79-147 % similar 3-(3-Pyridinyl)-2-propenoic acid1126-74-546 % similar trans-3-(3-Pyridyl)acrylic acid19337-97-446 % similar P-Phenylenediacrylic acid16323-43-645 % similar Imidazole-4-carboxaldehyde3034-50-245 % similar 1H-Imidazole-5-acetic acid645-65-842 % similar 1H-Imidazole-5-carboxylic acid1072-84-042 % similar Cinnamic acid621-82-942 % similar 3-(2,3,4,5,6-Pentafluorophenyl)-2-propenoic acid719-60-842 % similar 3-(2-Pyridinyl)-2-propenoic acid7340-22-940 % similar Indole-3-acrylic acid1204-06-440 % similar trans-3-Indoleacrylic acid29953-71-740 % similar 3-(4-Formylphenyl)-2-propenoic acid23359-08-239 % similar P-Coumaric acid501-98-439 % similar P-Coumaric acid7400-08-039 % similar Imidazoleacetic acid hydrochloride3251-69-239 % similar 4-Bromocinnamic acid1200-07-338 % similar trans-4-Fluorocinnamic acid14290-86-938 % similar 4-Chlorocinnamic acid1615-02-738 % similar