FIG. 1.

LC-atmospheric pressure chemical ionization-mass spectrometry molecular ion chromatograms obtained at 20 V from an ethyl acetate extract of C. elegans incubated with 32 μM malachite green for 5 days. (A) m/z 329, malachite green (retention time, 6.27 min); (B) m/z 315, desmethyl malachite green (retention time, 5.55 min); (C) m/z 301, didesmethyl malachite green (retention time, 4.94 min); (D) m/z 287, tridesmethyl malachite green (retention time, 4.16 min); (E) m/z 331, leucomalachite green (retention time, 13.31 min); (F) m/z 317, desmethyl leucomalachite green (retention time, 11.85 min); (G) m/z 303, didesmethyl leucomalachite green (retention time, 10.13 min); (H) m/z 289, tridesmethyl leucomalachite green (retention time, 8.35 min); (I) m/z 275, tetradesmethyl leucomalachite green (retention time, 6.57 min)