Similar names: 2-Butenoic acid, 2-methyl-, 7-[[2,3-dihydroxy-2-(1-hydroxyethyl)-3-methyl-1-oxobutoxy]methyl]-2,3,5,7a-tetrahydro-1H-pyrrolizin-1-yl ester, N-oxide, [1R-[1α(Z),7(2R*,3S*),7aβ]]-; Echimidine N-oxide (6CI); L-threo-Pentitol, 1,5-dideoxy-2-C-methyl-3-C-[[[(1R,7aR)-2,3,5,7a-tetrahydro-1-[[(2Z)-2-methyl-1-oxo-2-butenyl]oxy]-4-oxido-1H-pyrrolizin-7-yl]methoxy]carbonyl]- (9CI); 1,5-Dideoxy-2-C-methyl-3-C-[[[(1R,7aR)-2,3,5,7a-tetrahydro-1-[[(2Z)-2-methyl-1-oxo-2-buten-1-yl]oxy]-4-oxido-1H-pyrrolizin-7-yl]methoxy]carbonyl]-L-threo-pentitol