Synonyms: 3-Phorbinepropanoicacid, 9-ethenyl-14-ethyl-4,8,13,18-tetramethyl-20-oxo-, methyl ester,(3S-trans)-;3-Phorbinepropionic acid,14-ethyl-4,8,13,18-tetramethyl-20-oxo-9-vinyl-, methyl ester (8CI);Pyropheophorbide a methyl ester (6CI,7CI);MePPP;Methyl pyrophaeophorbide a;Methyl pyropheophorbide a;NSC 267052;Pyropheophorbide-alpha methyl ester;