4-Oxo-4H-1-benzopyran-2-carboxylic acid4940-39-031 % similar Coumarin-3-carboxylic acid531-81-731 % similar 2-Amino-3-formylchromone61424-76-831 % similar 2-Acetylbenzofuran1646-26-030 % similar 2-Benzofurancarboxylic acid496-41-330 % similar Isoflavone574-12-930 % similar Benzo(b)naphtho(1,2-d)furan205-39-030 % similar 1-Bromodibenzofuran50548-45-330 % similar 2-Phenylbenzoxazole833-50-130 % similar 1-Chlorodibenzofuran84761-86-430 % similar 4-Bromodibenzo[b,d]furan89827-45-230 % similar