1,2-Propanedione, 1-(2-amino-1,4,5,6,7,8-hexahydro-4-oxo-6-pteridinyl)- 6-(1,2-Dioxopropyl)-5,6,7,8-tetrahydropterin 6-Pyruvoyl tetrahydropteridine 6-Pyruvoyl-tetrahydropterin 89687-39-8 Dyspropterin Pyruvoyl-H4-pterin