7222-35-7 ASPIDOSPERMIDINE-3-CARBOXYLIC ACID, 2,3-DIDEHYDRO-20-((3-METHYL-1-OXO-2-BUTENYL) Aspidospermidine-3-carboxylic acid, 2,3-didehydro-20-((3-methyl-1-oxo-2-butenyl)oxy)-, methyl ester, (5-alpha,12-beta,19-alpha,20R)- BRN 0946842 Echitovenidine