Table 1: Chromatographic conditions for the proposed method.

Parameters

Conditions

Column

RP BDS Hypersil® C18 (150 x 4.60 mm, 5μm) (phenomenex, USA)

Mobile phase

Acetonitrile : 0.05 M phosphate buffer pH 3.50 (55 : 45)

UV detection, nm

254

Flow rate, mL/min

1.50

Injected volume, µl

20

Temperature

40