SYNTHESIS AND CHARACTERIZATION OF NEW HETEROCYCLIC DERIVATIVES FROM 7- HYDROXY -4- METHYL COUMARIN AND STUDY ANTIOXIDANT ACTIVITY FOR SOME SYNTHETIC COMPOUNDS: SYNTHESIS AND CHARACTERIZATION OF NEW HETEROCYCLIC DERIVATIVES FROM 7- HYDROXY -4- METHYL COUMARIN AND STUDY ANTIOXIDANT ACTIVITY FOR SOME SYNTHETIC COMPOUNDS. IJMRCP [Internet]. 2023 Jun. 30 [cited 2025 Jan. 5];15(1):120-31. Available from: https://jmracpc.uobaghdad.edu.iq/index.php/IJMRCP/article/view/334