2'R-Harringtonine 26833-85-2 Alkaloid C from cephalotaxus Cephalotaxine, 4-methyl (2R)-2-hydroxy-2-(3-hydroxy-3-methylbutyl)butanedioate (ester) (9CI) Cephalotaxine, 4-methyl-, 2-hydroxy-2-(3-hydroxy-3-methylbutyl)butanedioate (ester), (3(R))- Cephalotaxine, 4-methyl-2-hydroxy-2-(3-hydroxy-3-methylbutyl)butanedioate (ester), (3(R))- (9CI) Harringtonin Harringtonine Harringtonine (8CI) NSC 124147