. "\"The chemical reactions and pathways resulting in the breakdown of any compound containing pteridine (pyrazino(2,3-dipyrimidine)), e.g. pteroic acid, xanthopterin and folic acid.\" [GOC:jl, ISBN:0198506732]" . . "pteridine-containing compound catabolic process" . "pteridine and derivative catabolic process" . "pteridine and derivative catabolism" . "pteridine-containing compound breakdown" . "pteridine-containing compound catabolism" . "pteridine-containing compound degradation" . . . . . . . "pterin catabolic process" . "pterin catabolism" .