S(-)-2-AMINO-7,8-DIHYDRO-6-(2-HYDROXY-1-OXOPROPYL)-4(1H)-PTERIDINONE;SEPIAPTERIN;L-SEPIAPTERIN;L-SEPIAPTERIN DIHYDRATE;2-AMINO-7,8-DIHYDRO-6-(2S-HYDROXY-1-OXOPROPYL)-4(1H)-PTERIDINONE;SEPIAPTERIN (L-SEPIAPTERIN) COFACTOR OF NITRIC OX;L -SEPIAPTERIN DIHYDRATE 99+%;2-amino-6-(2-hydroxypropanoyl)-7,8-dihydro-1H-pty oeridin-4-one