Found 1 items, similar to C4H4N2.
English → English (gcide) Definition: C4H4N2 Pyrazine \Pyr"a*zine\, n. Also -zin \-zin\ . [Pyridine + Gr. ? not + ? life.] (Org. Chem.) A feebly basic solid, C4H4N2, obtained by distilling piperazine with zinc dust, and in other ways. Also, by extension, any of various derivatives of the same. [Webster 1913 Suppl.]