Synonyms: 3-Phorbinepropanoic acid, 21-carboxy-9-ethenyl-14-ethyl-13-formyl-4,8,18-trimethyl-20-oxo-, sodium salt (1:2), (3S,4S,21R)-;3-Phorbinepropanoic acid, 21-carboxy-9-ethenyl-14-ethyl-13-formyl-4,8,18-trimethyl-20-oxo-, disodium salt, (3S,4S,21R)-;Disodium (3S-(3alpha,4beta,21beta))-21-carboxy-14-ethyl-13-formyl-4,8,18-trimethyl-20-oxo-9-vinylphorbine-3-propionate;disodium (3S,4S,21R)-3-(2-carboxylatoethyl)-9-ethenyl-14-ethyl-13-formyl-4,8,18-trimethyl-20-oxo-24,25-dihydrophorbine-21-carboxylate