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Chromatogram and mass spectrum of TTX standard. (A) Chromatogram of TTX and 4-epiTTX obtained by PIS. (B) Mass fragmentation pattern of TTX and 4-epiTTX. (C) Chromatogram of 11-deoxyTTX obtained by PIS. (D) Mass fragmentation pattern of 11-deoxyTTX. (E) Chromatogram of 4,9-anhydroTTX obtained by PIS. (F) Mass fragmentation pattern of 4,9-anhydroTTX.
