Synonyms: 3-Phorbinepropanoicacid, 9-ethenyl-14-ethyl-21-(methoxycarbonyl)-4,8,13,18-tetramethyl-20-oxo-,(2E,7R,11R)-3,7,11,15-tetramethyl-2-hexadecenyl ester, (3S,4S,21S)- (9CI);3-Phorbinepropanoic acid, 9-ethenyl-14-ethyl-21-(methoxycarbonyl)-4,8,13,18-tetramethyl-20-oxo-,3,7,11,15-tetramethyl-2-hexadecenyl ester, [3S-[3a(2E,7S*,11S*),4b,21a]]-; Pheophytin a'