Methylxanthine (1) (DS-613)

Methylxantines were analyzed using RSpak DS-613 (a column for reversed phase chromatography).

Sample :
1. Xanthine
2. Theobromine
3. Theophylline
4. Caffeine

 Column : Shodex RSpak DS-613 (6.0mmID*150mm)
 Eluent : H2O/CH3CN=88/12
 Flow rate : 1.0mL/min
 Detector : UV(254nm)
 Column temp. : 40°C