1-[(6R)-2-amino-4-oxo-5,6,7,8-tetrahydro-1H-pteridin-6-yl]propane-1,2-dione 1-[(6R)-2-amino-4-keto-5,6,7,8-tetrahydro-1H-pteridin-6-yl]propane-1,2-dione 101383-42-0 1,2-Propanedione, 1-(2-amino-1,4,5,6,7,8-hexahydro-4-oxo-6-pteridinyl)-(R) 1,2-propanedione, 1-[(6R)-2-amino-3,4,5,6,7,8-hexahydro-4-oxo-6-pteridinyl]- 6(R)-pyruvoyltetra-hydropterin