title: Alkaline sodium dithionite and catalytic reduction of Di-, Tri-, and tetraalkoxycarbonylpyrazines. The synthesis of 1,2-dihydropyrazines.
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D011724:Pyridazines / Q000138:chemical synthesis*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D011724:Pyridazines