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Table 1 Percent occurrence, retention time and mass signal of bufadienolides in common toad tadpoles

From: Age- and environment-dependent changes in chemical defences of larval and post-metamorphic toads

Compound name Percent occurrence of bufadienolide compounds retention time (min) m/z [M + H]+
stage 19 stage 28 stage 34 stage 38 stage 46
Arenobufagin 10 67.5 90 95 43.6 4.5 417.2
Bufalin - 25 40 60 56.4 14.5 387.25
Bufotalin 5 97.5 95 97.5 100 9.5 445.3
Gamabufotalin - - 15 35 51.3 3.5 403.25
Resibufogenin - 12.5 5 17.5 15.4 19 385.25
Telocinobufagin 22.5 37.5 47.5 70 100 8.7 403.25
unidentified bufadienolide 1 - 100 100 100 100 6.6 729.35
unidentified bufadienolide 2 2.5 95 92.5 95 100 7.5 727.3
unidentified bufadienolide 3 - 5 - 2.5 51.3 9.6 729
unidentified bufadienolide 4 - 92.5 100 100 100 10.6 715
unidentified bufadienolide 5 - 10 12.5 5 - 11.8 627.4
unidentified bufadienolide 6 - 72.5 72.5 60 94.9 12.3 713.3
unidentified bufadienolide 7 - 12.5 25 2.5 53.8 12.9 671.35
unidentified bufadienolide 8 - 85 90 85 76.9 13 743
unidentified bufadienolide 9 - 75 85 85 - 16.7 671.4
unidentified bufadienolide 10 - 100 85 82.5 97.4 16.9 757.3
unidentified bufadienolide 11 7.5 40 75 87.5 66.7 6 415.3
unidentified bufadienolide 12 2.5 100 97.5 100 56.4 18.6 573.15
unidentified bufadienolide 13 2.5 100 100 100 28.2 20 571.1
unidentified bufadienolide 14 - 100 100 95 82.1 21.7 367.1
unidentified bufadienolide 15 2.5 85 25 10 15.4 22.9 365.1
unidentified bufadienolide 16 - 100 100 97.5 84.6 24.6 601.15
  1. Compounds represented by "-" were not detectable by HPLC-DAD-MS in any of the samples