1,3-Benzodioxan-2-carboxylic acid, 4-methyl-4-phenyl-, (E)- 4H,1,3-Benzodioxin-2-carboxylic acid, 4-methyl-4-phenyl-, trans- 86616-93-5 Acide (methyl-4 phenyl-4 (4H) benzodioxine (1,3)) carboxylique-2 trans [French] trans-4-Methyl-4-phenyl-1,3-benzodioxan-2-carboxylic acid