. "\"The chemical reactions and pathways involving any compound containing pteridine (pyrazino(2,3-dipyrimidine)), e.g. pteroic acid, xanthopterin and folic acid.\" [GOC:jl, ISBN:0198506732]" . . "pteridine-containing compound metabolic process" . "pteridine and derivative metabolic process" . "pteridine and derivative metabolism" . "pteridine-containing compound metabolism" . . . . . "pterin metabolic process" . "pterin metabolism" .