Sg. Ji et al., Determination of tetrahydropalmatine in Chinese traditional medicine by nonaqueous capillary electrophoresis, ELECTROPHOR, 20(9), 1999, pp. 1904-1906
Tetrahydropalmatine in Rhizoma corydalis and its preparations were separate
d and determined with no pretreatment in the buffer solution of 50 mmol/L o
f sodium acetate in methanol containing 2 mol/L acetic acid.