1 H-NMR signals corresponding to DKP were the following: 1 H-NMR (400 MHz, D 2 O) ppm: 7.18 (d, 2H, J = 8.1Hz), 6.83 (d, 2H, J = 8.1Hz), 5.19 (s, 1H, CHPh), 5.16 (d, 1H, J = 2.6Hz, H-6), 4.02 (d, 1H, J = 2.6 Hz, H-5), 3.37 (s, 1H, H-3), 1.52 (s, 3H, CH 3 ), 1.15(s, 3H, CH 3 )
1):S1320
It may not be suitable for individuals with liver or kidney disease, as these conditions can affect berberine metabolism and clearance
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