2-propenoic acid, 3-(4-hydroxy-3,5-dimethoxyphenyl)- 3-(4-hydroxy-3,5-dimethoxyphenyl)acrylic acid 530-59-6 CINNAMIC ACID,3,5-DIMETHOXY,4-HYDROXY InChI=1/C11H12O5/c1-15-8-5-7(3-4-10(12)13)6-9(16-2)11(8)14/h3-6,14H,1-2H3,(H,12,13