2-Amino-4(1H)-pteridinone 2-Amino-4(3H)-pteridinone 2-Amino-4-hydroxypteridine 2-Amino-4-pteridone 2236-60-4 4(1H)-Pteridinone, 2-amino- 4-Oxopterin NSC170929 Pteridoxamine Pterin Quinonoid dihydropterin, 2-amino-