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. 1997 Nov 25;94(24):13357–13362. doi: 10.1073/pnas.94.24.13357

Figure 1.

Figure 1

HPLC profile and LC/MS spectra of the active principles. (A) Active fractions eluted from the Bio-Gel P-2 column were dissolved in 200 μl of 0.1% TFA and separated on a reverse-phase column [Develosil ODS-5 (4.6 × 250 mm)] with 12% acetonitrile containing 0.1% TFA at 0.5 ml/min. (B and C) Mass spectra were obtained using a Fisons VG platform quadrupole mass spectrometer equipped to perform electrospray ionization, interfaced to an HPLC system. The HPLC eluate was split 1:9 so that 50 μl/min flowed to the mass spectrometer during separation. (B) Mass spectrum of the active compound eluted at 15.1 min. (C) Mass spectrum of the active compound eluted at 24.4 min.