However, this possibility has been excluded by the synthesis of the 11 epimer and the demonstration that it has different chromatographic behavior from ouabain.
These highly specialized gel filtration and chromatographic media are composed of macroscopic beads synthetically derived from the polysaccharide, dextran.
Although these clinical symptoms are inconsistent with those of amatoxin poisoning, the presence of -, - and - amanitins in this species has been verified with chromatographic analysis.
Many commercial immunoassay screening tests directed at the amphetamines cross-react appreciably with pseudoephedrine, but chromatographic techniques can easily distinguish pseudoephedrine from other phenethylamine derivatives.
