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 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, (1R-(1alpha(Z),7(2R*,3S*),7abeta))- 520-68-3 ECHIMIDINE HSDB 3483