(L-erythro)-2-Amino-6-(1,2-dihydroxypropyl)-4(3H)-pteridinon (S-(R*,S*))-2-Amino-6-(1,2-dihydroxypropyl)-1H-pteridin-4-one 22150-76-1 4(1H)-Pteridinone, 2-amino-6-(1,2-dihydroxypropyl)-, (S-(R*,S*))- (9CI) 4(3H)-Pteridinone, 2-amino-6-(L-erythro-1,2-dihydroxypropyl)- 6-Biopterin Biopterin EINECS 244-807-8 L-Biopterin NSC 339699 Pterin H B2