has role artemether CHEBI:195280 An artemisinin derivative that is artemisinin in which the lactone has been converted to the corresponding lactol methyl ether. It is used in combination with lumefantrine as an antimalarial for the treatment of multi-drug resistant strains of <em>falciparum</em> malaria. sesquiterpenoid antineoplastic agent antimalarial cyclic acetal artemisinin derivative anti-HIV agent semisynthetic derivative