J. Braz. Chem. Soc. vol.23 número1
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![Figure 1. ESI(+)-MS of a methanolic solution of artemether doped with LiCl.](https://thumb-eu.123doks.com/thumbv2/123dok_br/18996821.462468/2.892.132.737.924.1086/figure-esi-ms-methanolic-solution-artemether-doped-licl.webp)
![Figure 2. ESI(+)-MS/MS of the (A) [M + Li] + , (B) [M + Na] + and (C) [M + K] + aducts of artemether.](https://thumb-eu.123doks.com/thumbv2/123dok_br/18996821.462468/3.892.158.760.265.1103/figure-esi-ms-ms-li-na-aducts-artemether.webp)
![Figure 3. ESI(+)-MS of an acidified water:methanol solution of lumefantrine.](https://thumb-eu.123doks.com/thumbv2/123dok_br/18996821.462468/4.892.220.646.109.321/figure-esi-ms-acidified-water-methanol-solution-lumefantrine.webp)
![Figure 4. ESI(+)-MS/MS of the isotopologue ions of protonated lumefantrine of (A) m/z 528 and (B) m/z 530.](https://thumb-eu.123doks.com/thumbv2/123dok_br/18996821.462468/5.892.157.758.110.639/figure-esi-ms-ms-isotopologue-ions-protonated-lumefantrine.webp)
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