1,3-Cyclohexadiene-1-carboxylic acid, 5-((1-carboxyethenyl)oxy)-6-hydroxy-, trans- 22642-82-6 5-((1-Carboxyethenyl)oxy)-6-hydroxy-1,3-cyclohexadiene-1-carboxylic acid Iso-chorismic acid Isochorismate Isochorismic acid