7, 8-Dihydro-L-Biopterin
                               

Description                      Yellow powder
HPLC                                       98.5%
HPLC conditions:    Column: Whatman Partisil 10SCX
                                        Eluant: 30mM Na2HPO4 ,PH 3
                                      Flow rate: 1.5ml/min
                                      Wavelength: 254nm
                         
Total ash                               <0.1%