title: [2,2'-Bi-4-pyrones (author's transl)].
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D011083:Polycyclic Compounds; D011714:Pyrans
chemical_list: D011083:Polycyclic Compounds; D011714:Pyrans
vernacular_title: 2,2'-Bi-4-pyrone. 50. Uber Untersuchungen an 4-Pyronen