Drugs
Drugs were analyzed using Asahipak 
ODP-50 (a column for reversed phase chromatography).

Sample :
1. 
5-Fluorouracil (5-FU)
2. 
Propranolol
3. 
Diphenhydramine
4. 
Hydrocortisone
Column       : Shodex Asahipak ODP-50 4D (4.6mmID*150mm)
Eluent       : 25mM Sodium phosphate buffer(pH3.0)/CH3CN=70/30
Flow rate    : 0.6mL/min
Detector     : UV(254nm)
Column temp. : 30deg-C