Fig. 1
From: A study on the processing technology for Rhizoma Coptidis
High-performance liquid chromatogram. The numbered peaks represent: 2. Pharmacorhizine hydrochloride, 3. Tetrandrine hydrochloride, 4. Epiberberine hydrochloride, 5. Coptidine hydrochloride, 6. Palmatine hydrochloride, and 7. Berberine hydrochloride