11075-67-5 28831-65-4 3-Benzofurancarboxylic acid, 4-(3-(1-carboxy-2-(3,4-dihydroxyphenyl)ethoxy)-3-oxo-1-propenyl)-2-(3,4-dihydroxyphenyl)-2,3-dihydro-7-hydroxy- 4-(3-(1-Carboxy-2-(3,4-dihydroxyphenyl)ethoxy)-3-oxo-1-propenyl)-2-(3,4-dihydroxyphenyl)-2,3-dihydro-7-hydroxy-3-benzofurancarboxylic acid 54814-35-6 Lithospermic acid