title: L-threo-Neopterin, the major pterin in Escherichia coli B.
mesh_terms: D002854:Chromatography, Paper; D002855:Chromatography, Thin Layer; D004926:Escherichia coli / Q000032:analysis*; D011622:Pterins / Q000032:analysis / Q000302:isolation & purification*
chemical_list: D011622:Pterins