2-amino-6-((1S,2R)-1,2,3-trihydroxypropyl)pteridin-4(3H)-one;2-Amino-6-[(1S,2R)-1,2,3-trihydroxypropyl]-4(3H)-pteridinone; Neopterin; 2-Amino-4-hydroxy-6-(1,2,3-trihydroxypropyl)pteridine; 2-Amino-6-((1S,2R)-1,2,3-trihydroxypropyl)-4(8H)-pteridone; 6-D-erythro-Neopterin; D-(+)-Neopterin; D-erythro-Neopterin;D-Neopterin