(7S-(7R*(1S*,2R*)))-2-Amino-7-(1,2-dihydroxypropyl)-5,6,7,8-tetrahydro-4(1H)-pteridinone 136459-42-2 2-Amino-4-hydroxy-7-(dihydroxypropyl)-5,6,7,8-tetrahydrobiopterin 4(1H)-Pteridinone, 2-amino-7-(1,2-dihydroxypropyl)-5,6,7,8-tetrahydro-, (7S-(7R*(1S*,2R*)))- 7-BH4