(1) gamabufotalin; (2) arenobufagin; (3) telocinobufagin; (4) desacetylcinobufotalin; (5) bufotalin; (6) cinobufotalin; (7) bufalin; (8) cinobufagin; (9) resibufogenin.

Figure 3: Typical chromatograms of standard mixture (A) and toad skin samples (B) at 296 nm.