sentences:  Dehydroemetine is a synthetically produced antiprotozoal agent similar to emetine in its anti-amoebic properties and structure (they differ only in a double bond next to the ethyl group), but it produces fewer side effects.Cephaeline is a desmethyl analog of emetine also found in ipecac root.Emetine dihydrochloro hydrate is used in the laboratory to block protein synthesis in eukaryotic cells.