Synonyms: XANTHOPTERIN;2-AMINO-4,6-DIHYDROXYPTERIDENE;2-aminopteridine-4(3H),6(5H)-dione;4,6-Pteridinedione,2-amino-1,5-dihydro-(9CI);2-AMINO-1,5-DIHYDROPTERIDINE-4,6-DIONE;2-Amino-4,6(1H,5H)-pteridinedione;2-Amino-4-oxo-6-hydroxy-3,4-dihydropteridine;2-amino-1,5-dihydropteridine-4,6-quinone