72953-55-0 Cuprate(2-), ((3S,4S,21R)-21-carboxy-9-ethenyl-14-ethyl-13-formyl-4,8,18-trimethyl-20-oxo-3-phorbinepropanoato(4-)-kappaN23,kappaN24,kappaN25,kappaN26)-, dipotassium, (SP-4-2)- Dipotassium (3S-(3alpha,4beta,21beta))-(21-carboxy-14-ethyl-13-formyl-4,8,18-trimethyl-20-oxo-9-vinylphorbine-3-propionato(4-)-N23,N24,N25,N26)cuprate(2-) EINECS 277-123-3