Electrophoresis. 1999 Jul; 20(9): 1904-6.

Determination of tetrahydropalmatine in Chinese traditional medicine by nonaqueous capillary electrophoresis.

Ji SG, Chai YF, Zhang GQ, Wu YT, Yin XP, Liang DS, Xu ZM.

Department of Pharmacy, Hospital 401, Qingdao, PR China. jisg@public.qd.sd.cn

Tetrahydropalmatine in Rhizoma corydalis and its preparations were separated and determined with no pretreatment in the buffer solution of 50 mmol/L of sodium acetate in methanol containing 2 mol/L acetic acid.