[Tautomerism of a 2, 7-diazaphenothiazine derivative. Reactions in the pyridine series. V].
D006571:Heterocyclic Compounds / Q000737:chemistry*; D011725:Pyridines
D006571:Heterocyclic Compounds; D011725:Pyridines; C023666:pyridine
HETEROCYCLIC COMPOUNDS/chemistry