13870-94-5 14751-08-7 Magnesium, (3,7,11,15-tetramethyl-2-hexadecenyl 3,4-didehydro-9-ethenyl-14-ethyl-21-(methoxycarbonyl)-4,8,13,18-tetramethyl-20-oxo-3-phorbinepropanoato(2-)-N23,N24,N25,N26)-, (SP-4-2-(7R-(3(2E,7R*,11R*))))- Protochlorophyll Protochlorophyll a Protochlorophylls