Lorazepam
Lorazepam was analyzed using ORpak 
CDBS-453 (a column 
for chiral separation).

Sample : 
Lorazepam
Column       : Shodex ORpak CDBS-453 (4.6mmID*150mm)
Eluent       : 20% CH3CN + 80%(1% CH3COOH + 0.2M NaCl) in H2O
Flow rate    : 0.5mL/min
Detector     : UV(254nm)
Column temp. : 15deg-C