title: SOME SUBSTITUTED PYRIDO(2,3)PYRAZINES.
mesh_terms: D002626:Chemistry, Pharmaceutical; D011719:Pyrazines; D011725:Pyridines; D012106:Research
chemical_list: D011719:Pyrazines; D011725:Pyridines
keywords: CHEMISTRY, PHARMACEUTICAL; EXPERIMENTAL LAB STUDY; PYRAZINES; PYRIDINES