DU=C:/Bruker/XWIN-NMR, USER=cui, NAME=xanthine, EXPNO=4, PROCNO=1 F1=166.409ppm, F2=140.409ppm, MI=1.00cm, MAXI=36.00cm, PC=2.000 # ADDRESS FREQUENCY INTENSITY [Hz] [PPM] 1 11333.8 14394.789 143.0716 12.50