Multicomponent Analysis of Liuwei Dihuang Pills by a Single Marker Quantification Method and Chemometric Discrimination of Fingerprints

Figure 1

The structures of the 8 quality control markers: (a) gallic acid, (b) 5-hydroxymethylfurfural, (c) morroniside, (d) sweroside, (e) loganin, (f) paeoniflorin, (g) cornuside, and (h) paeonol.

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(b)

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(h)