title: Urocanic acid photobiology. Photocycloaddition of N,N-dimethylthymine to urocanic acid.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D007093:Imidazoles / Q000528:radiation effects; D010782:Photolysis; D013941:Thymine / Q000031:analogs & derivatives*; D014560:Urocanic Acid / Q000528:radiation effects
chemical_list: D007093:Imidazoles; C039199:N,N-dimethylthymine; D014560:Urocanic Acid; D013941:Thymine