Synonyms: 3-Phorbinepropanoicacid,9-ethenyl-14-ethyl-13-formyl-21-(methoxycarbonyl)-4,8,18-trimethyl-20-oxo-,(2E,7R,11R)-3,7,11,15-tetramethyl-2-hexadecenyl ester, (3S,4S,21R)- (9CI);3-Phorbinepropanoic acid, 9-ethenyl-14-ethyl-13-formyl-21-(methoxycarbonyl)-4,8,18-trimethyl-20-oxo-,3,7,11,15-tetramethyl-2-hexadecenyl ester, [3S-[3a(2E,7S*,11S*),4b,21b]]-; 3-Phorbinepropionic acid,21-carboxy-14-ethyl-13-formyl-4,8,18-trimethyl-20-oxo-9-vinyl-, 21-methyl3-phytyl ester, (E)- (8CI); Pheophytin b (6CI,7CI); Chlorophyllic acid b;Phaeophytin b