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Chromatograms. (A) Dexamethasone sodium phosphate; (B) ondansetron hydrochloride; (C) tropisetron hydrochloride; (D) dolasetron mesylate; (E) azasetron hydrochloride; (F) palonosetron hydrochloride; (G) ramosetron hydrochloride. Peak 1 represents the correspondent component. The retention time was 3.6, 6.1, 7.3, 5.6, 5.2, 13.1 and 5.3 min, respectively.
