Fig. 6

GC–MS fingerprint of (a) agarwood reference drug and (b)–(d) overlap of fingerprint for 6 batches of experimental group (b), negative control group (c), and blank control group (d) and that for 1 batch of agarwood reference drug. Peak 1: benzylacetone; peak 2: baimuxinal; and peak 3: 2-(2-phenylethyl) chromone.