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HPLC-fingerprint analysis of dry extract from Uncaria tomentosa. 1—Speciophylline (10.075 min), 2—uncarine F (14.067 min), 3—mitraphylline (15.193 min), 4—rhynchophylline (19.724 min), 5—isomitraphylline (22.515 min), 6—uncarine C (23.682 min), 7—isorhynchophylline (25.778 min), and 8—uncarine E (31.255 min).
